Five-second answer

Claim we investigated

The No campaign's lead argument against I-638 is that it requires genital exams, and an allied group says its polling shows that argument turns voters against the measure.

True. The No argument leads with the exam claim, and an allied group says the detail turns voters against I-638. The No argument's heading in the state voters' pamphlet, two news organizations' accounts of the Northwest Progressive Institute's polling, and the institute's own posts converge, while the measure's text and the campaign's own materials show the exam is not required.

Quote or cite this fact-check

FactHub rates the claim “The No campaign's lead argument against I-638 is that it requires genital exams, and an allied group says its polling shows that argument turns voters against the measure” True (moderate confidence): The No argument leads with the exam claim, and an allied group says the detail turns voters against I-638. Reviewed October 26, 2026. https://facthub.org/n/article/wa-i638-exam-claim-persuasion/1

One-minute summary

What the evidence establishes

  • Established. The No campaign's argument in the state voters' pamphlet is headed 'Vote No Because Doctors and Nurses Warn It Requires Invasive Genital Exams On Girls', and its rebuttal repeats the warning.
  • Established. The Northwest Progressive Institute, which belongs to the coalition opposing I-638 and runs its own committee against it, told KUOW and The Seattle Times that its unreleased polling shows majority support for the measure among voters who see only the ballot language.
  • Established. The institute's founder told KUOW that once voters learned genital exams could be required of all girls they were less likely to support the measure, and told The Seattle Times opponents must 'break through' with details like a potentially invasive exam.
  • Established. The measure requires no exam: a girl's own provider may rely on genetics or testosterone instead, and the No campaign's own pamphlet argument and doctors' statement list those alternatives.
  • Established. In FactHub's audit of Washington news coverage, the exam claim ran without context in 14 of 28 mainstream news stories that carried it.
  • Not shown. The poll's numbers, question wording and method are not public, so the size of the effect the institute describes cannot be checked.
  • Not shown. Nothing shows the No committee commissioned or used the institute's polling, or that anyone repeating the exam claim knew it was false.
Important context: Initiative IL26-638 is on Washington's November 3, 2026 ballot. FactHub has already rated the claim that it will require genital examinations False (high confidence): Section 3(2) lets a girl's own health care provider rely on any one of anatomy, genetic makeup or testosterone levels. This check asks a different question: what role the exam claim plays in the campaign against the measure, as the record shows it. It relies on what the Northwest Progressive Institute told reporters about polling it has not released, and it does not judge anyone's intent. FactHub takes no position on I-638.

The evidence

The conclusion rests on the combined record. Expand each item to see its role and limitations.

Independence note: This check uses 5 methods across 8 institutions and 1 country or international grouping.
Evidence map
Method Institution / country Year(s) What it shows Key limitation Primary links
Review of the No campaign's voters' pamphlet argument, website and circulated doctors' statement No Hate in WA State, Washington Secretary of State United States 2026 The official argument against I-638, printed in the state voters' pamphlet, uses the exam warning as one of its section headings and repeats it in the rebuttal. The campaign's website says the measure 'could force invasive genital exams', and a statement it published for more than 100 doctors and other providers says girls will need a 'reproductive organ exam' or costly testing. These are the campaign's own materials. They show what it chose to emphasize in print, not how much of its advertising or canvassing used the claim, and the campaign's website uses the softer 'could force'. FactHub No Hate in WA State No Hate in WA State
Comparison of the filed initiative text with the campaign's descriptions of it Washington Secretary of State, No Hate in WA State United States 2025, 2026 Section 3(2) requires a provider-signed statement 'relying only on one or more of' reproductive anatomy, genetic makeup or normal testosterone levels, so any one basis suffices and no exam is required. The No pamphlet argument itself describes the rule as invasive examinations 'or expensive genetic or hormone tests', and the doctors' statement says 'or costly genetic or hormone testing'. The text does not say how providers would choose among the bases or who would pay for tests, so an anatomy-based check may still be the most common route in practice; implementing guidance does not exist yet. Washington Secretary of State FactHub No Hate in WA State
Review of news reports quoting the Northwest Progressive Institute on its polling KUOW Public Radio, The Seattle Times, KOMO News United States 2026 KUOW reported on October 5 that voters tend to support the measure after reading the ballot language, according to the institute's founder, Andrew Villeneuve, but that once they found out genital exams could be required of all girls they were less likely to support it. The Seattle Times reported on October 25 that the institute's polling has consistently shown majority support among voters shown the ballot language, and quoted Villeneuve saying the measure stands a decent chance of passing unless opponents can 'break through' with details like a potentially invasive exam. KOMO and KATU reported the institute had commissioned extensive polling but declined to share results. All three reports rest on the institute's own description; none of the outlets saw the results, and the institute declined to share them. The institute opposes the measure and benefits from describing the race as winnable for its side. KUOW paraphrases rather than quotes the key sentence. KUOW Public Radio The Seattle Times (via The Spokesman-Review) KOMO News
Review of the institute's own posts and campaign site, and state campaign-finance records Northwest Progressive Institute, Washington Public Disclosure Commission United States 2026 The institute's January 22 post says it belongs to Washington Families For Freedom, the coalition opposing I-638, and that its Permanent Defense project is working to defeat the measure. Its campaign site, paid for by Permanent Defense PAC, calls No Hate in WA State the coalition opposing the measure. The institute made the strong exam claim in its own voice in January, before it described any polling. In state campaign-finance data we found no contributions or payments between the institute and No Hate in WA State; the No committee reports its own polling, including a $78,400 fee split between I-638 and a second measure. Campaign-finance records show money, not coordination; the absence of payments between the institute and the No committee does not show they never shared information. The No committee's own polling results are not public. Northwest Progressive Institute Northwest Progressive Institute Permanent Defense PAC Washington Public Disclosure Commission
Content analysis of Washington news coverage, from FactHub's coded media audit FactHub Research Team United States 2025, 2026 FactHub's audit of Washington I-638 coverage found that, in mainstream news, the genital-exam claim ran without context in 14 stories and with context in 14. Some outlets, including The Seattle Times newsroom, checked it against the text. One coder applied the codebook, so the counts are approximate. The audit counts stories, not readers, and does not measure effects on voters. FactHub
1. The exam warning leads the No campaign's case Review of the No campaign's voters' pamphlet argument, website and circulated doctors' statement

The official argument against I-638, printed in the state voters' pamphlet, uses the exam warning as one of its section headings and repeats it in the rebuttal. The campaign's website says the measure 'could force invasive genital exams', and a statement it published for more than 100 doctors and other providers says girls will need a 'reproductive organ exam' or costly testing.

Limit: These are the campaign's own materials. They show what it chose to emphasize in print, not how much of its advertising or canvassing used the claim, and the campaign's website uses the softer 'could force'.

Verify: FactHub dataset: Initiative 638, the campaigns' claims in their own words (v1) About I-638 100+ doctors and other medical providers issue statement opposing IL26-001 and IL26-638 (August 24, 2026)

Vote No Because Doctors and Nurses Warn It Requires Invasive Genital Exams On Girls

Committee for the argument against Initiative IL26-638 (Justin Gill, APRN, and five co-authors), Authors of the official voters' pamphlet argument against IL26-638 2026 Washington voters' pamphlet, Initiative Measure IL26-638, p. 22, argument against: "Vote No Because Doctors and Nurses Warn It Requires Invasive Genital Exams On Girls" · · Assertion

Context: A heading of the No argument on what verification would involve.

Source: Washington Secretary of State, 2026 General Election voters' pamphlet (statewide edition) · View in the dataset

Related claim: Initiative 638 requires sex verification for girls, not an invasive exam. — Officials' and the No campaign's statements that I-638 requires invasive exams, rated sentence by sentence.

2. The measure, and the campaign's own materials, list alternatives to an exam Comparison of the filed initiative text with the campaign's descriptions of it

Section 3(2) requires a provider-signed statement 'relying only on one or more of' reproductive anatomy, genetic makeup or normal testosterone levels, so any one basis suffices and no exam is required. The No pamphlet argument itself describes the rule as invasive examinations 'or expensive genetic or hormone tests', and the doctors' statement says 'or costly genetic or hormone testing'.

Limit: The text does not say how providers would choose among the bases or who would pay for tests, so an anatomy-based check may still be the most common route in practice; implementing guidance does not exist yet.

Verify: Initiative Measure No. IL26-638, final filed text (filed June 2, 2025) FactHub dataset: Initiative 638, the campaigns' claims in their own words (v1) 100+ doctors and other medical providers issue statement opposing IL26-001 and IL26-638 (August 24, 2026)

Section 2 says doctors must subject girls to invasive examinations of their "reproductive organs," or expensive genetic or hormone tests.

Committee for the argument against Initiative IL26-638 (Justin Gill, APRN, and five co-authors), Authors of the official voters' pamphlet argument against IL26-638 2026 Washington voters' pamphlet, Initiative Measure IL26-638, p. 22, argument against: "Vote No To Protect All Girls" · · Assertion

Context: The No argument's reading of the verification rule, which appears in Section 3(2) of the measure.

Source: Washington Secretary of State, 2026 General Election voters' pamphlet (statewide edition) · View in the dataset

Deeper analysis: Initiative 638 requires a doctor's sex verification, not a genital exam. — FactHub rates the claim that I-638 will require genital examinations False (high confidence): the text lets providers verify sex by genetics or testosterone instead. This links to the version that was current when this fact check was written. Read the latest version.

3. An opposing group says its unreleased polling shows the exam detail turns voters Review of news reports quoting the Northwest Progressive Institute on its polling

KUOW reported on October 5 that voters tend to support the measure after reading the ballot language, according to the institute's founder, Andrew Villeneuve, but that once they found out genital exams could be required of all girls they were less likely to support it. The Seattle Times reported on October 25 that the institute's polling has consistently shown majority support among voters shown the ballot language, and quoted Villeneuve saying the measure stands a decent chance of passing unless opponents can 'break through' with details like a potentially invasive exam. KOMO and KATU reported the institute had commissioned extensive polling but declined to share results.

Limit: All three reports rest on the institute's own description; none of the outlets saw the results, and the institute declined to share them. The institute opposes the measure and benefits from describing the race as winnable for its side. KUOW paraphrases rather than quotes the key sentence.

Verify: Polling shows ban on trans girls in girls' sports could pass in November (October 5, 2026) All eyes on WA as voters consider trans athlete initiative (Daniel Beekman and Ryan Nguyen, October 25, 2026) New polling shows support for Washington transgender girls sports initiative (KOMO/KATU, 2026)

4. The institute is part of the opposing coalition, not the No committee Review of the institute's own posts and campaign site, and state campaign-finance records

The institute's January 22 post says it belongs to Washington Families For Freedom, the coalition opposing I-638, and that its Permanent Defense project is working to defeat the measure. Its campaign site, paid for by Permanent Defense PAC, calls No Hate in WA State the coalition opposing the measure. The institute made the strong exam claim in its own voice in January, before it described any polling. In state campaign-finance data we found no contributions or payments between the institute and No Hate in WA State; the No committee reports its own polling, including a $78,400 fee split between I-638 and a second measure.

Limit: Campaign-finance records show money, not coordination; the absence of payments between the institute and the No committee does not show they never shared information. The No committee's own polling results are not public.

Verify: Brian Heywood's IL26-638 (subjecting young female athletes to invasive genital exams) gets certified (Andrew Villeneuve, January 22, 2026) Section 3 of Brian Heywood's Initiative 638 would require Washington girls to prove they have a vagina just to play sports (Andrew Villeneuve, October 6, 2026) Wrong for Washington: Vote NO on 645, 001 and 638 Expenditures by candidates and political committees (open data), No Hate in WA State, polling entries

Related claim: Individuals fund most of I-638's Yes side; a foundation and unions fund No. — Who funds each side: individuals fund most of the Yes side; a foundation and unions fund most of No Hate in WA State.

5. News coverage often passed the claim along unchecked Content analysis of Washington news coverage, from FactHub's coded media audit

FactHub's audit of Washington I-638 coverage found that, in mainstream news, the genital-exam claim ran without context in 14 stories and with context in 14. Some outlets, including The Seattle Times newsroom, checked it against the text.

Limit: One coder applied the codebook, so the counts are approximate. The audit counts stories, not readers, and does not measure effects on voters.

Verify: FactHub fact check: Few mainstream I-638 news stories reported the facts that answer opponents (v6)

Common questions

“This proves the No campaign knows the exam claim is false and is lying to win.”

Short answer: Not shown

It shows that an allied group says the exam detail turns voters, and that the campaign's own materials list the alternatives that make 'requires' false. It does not show what anyone knew or intended. The institute was making the strong claim in January, before it described polling, and nothing shows the No committee saw the institute's results. FactHub rates what was said, not motives.

“The institute's polling is the No campaign's polling.”

Short answer: Ally, not the committee

The institute belongs to the opposing coalition and runs its own committee, Permanent Defense PAC, but it is not No Hate in WA State, the registered No committee. State records show no payments between them. The No committee reports polling by other firms, and those results are not public.

“The detail the institute says moves voters is only that the measure could require an exam, which is fair.”

Short answer: Partly

The Seattle Times quotes Villeneuve describing a measure that 'could require a potentially invasive physical exam', a hedged concern FactHub's genital-exam check calls plausible but unproven, since cost and insurance could steer some families to an anatomy check. KUOW's account, exams 'could be required of all girls', goes further: no girl is required to have one. The No campaign's pamphlet heading uses the unhedged 'Requires'. Without the poll's wording we cannot tell which version respondents heard.

“Polls show I-638 will pass.”

Short answer: Polls disagree

Let's Go Washington, which backs the measure, says its polling shows it likely to pass, and the institute says its polling shows majority support at the ballot language. The Ballot Initiative Strategy Center says its polling shows many voters undecided or persuadable. None has released full results with method, so none settles the outcome.

“Only the No side accuses the other of lying.”

Short answer: No, both sides do

Let's Go Washington wrote that 'the opposition has lied', and a co-author of the Yes argument called the exam claim a 'fantastical lie'. FactHub doesn't adopt either side's label: it rates the exam claim False on the text, and checks the Yes campaign's claims, such as that a doctor's checkbox already exists, by the same standard.

Related claim: A doctor's checkbox could satisfy I-638 for most girls; the box is new. — The Yes campaign's claims checked by the same standard: a doctor's checkbox could satisfy I-638 for most girls, but the box is new.

Conclusion

Three things are on the record. First, the exam claim is the No campaign's lead argument: the official argument against I-638 in the state voters' pamphlet is headed 'Vote No Because Doctors and Nurses Warn It Requires Invasive Genital Exams On Girls', its rebuttal repeats it, and the campaign's website and doctors' statement make the same warning. Second, the Northwest Progressive Institute, which describes itself as part of the coalition opposing the measure and runs its own political committee against it, told KUOW and The Seattle Times that its unreleased polling shows majority support among voters who see only the ballot language, and that support falls once voters learn that genital exams 'could be required of all girls'. Third, coverage often passed the claim along unchecked: in FactHub's audit of Washington news coverage, the claim ran without context in 14 of 28 mainstream news stories that carried it. The claim itself does not hold up in its strong form. Section 3(2) lets a provider rely on 'one or more' of three bases, so a genetic or testosterone test, or what a girl's own provider already knows, can satisfy it without any exam. The No campaign's own materials say as much: the same pamphlet argument lists 'expensive genetic or hormone tests' as an alternative, and the doctors' statement it circulated lists 'costly genetic or hormone testing'. FactHub rates the pamphlet heading's 'Requires' False in its genital-exam check. The softer version is different. The Seattle Times quotes Andrew Villeneuve as saying opponents must 'break through' with details 'like how it could require a potentially invasive physical exam for girls'. That hedged concern, that some girls could end up with an anatomy-based check because genetic or hormone tests cost more, is plausible but unproven, as FactHub's genital-exam check explains. KUOW's account, 'could be required of all girls', goes further than the text allows, since no girl is required to have one. Because the poll has not been released, we cannot tell which wording respondents heard, how much support moved, or whether the effect is as large as described. We rate the claim True because each part is documented: the exam claim leads the No argument, and an allied group has said publicly, twice, that this kind of detail turns voters. Confidence is Moderate rather than High because the polling evidence is an interested party's description of unreleased results. The institute benefits from describing the race as winnable for its side, and it published no numbers, question wording or method. What this does not show matters as much. It does not show that the No campaign commissioned, saw or acted on the institute's polling: the institute is a coalition partner, not the registered No committee, and state campaign-finance filings show no payments between them. The No committee reports its own polling, whose results are not public. Nor does it show that anyone knew the claim was false. The institute was making the strong claim in January 2026, before it described any polling results. FactHub rates what was said, not the intent of those who said it, and the same standard applies to supporters who have called the exam claim a lie.

How we checked

  1. Defined the claim precisely: whether the exam warning leads the No campaign's case, and whether a group allied with it has said its polling shows that warning turns voters. The exam claim's accuracy is taken from FactHub's existing checks.
  2. Read the No argument and rebuttal in the 2026 voters' pamphlet, through FactHub's dataset of the campaigns' pamphlet statements, plus the No campaign's website and its doctors' statement.
  3. Compared those descriptions with Section 3(2) of the filed initiative text.
  4. Collected every news report we found that describes the Northwest Progressive Institute's I-638 polling (KUOW, The Seattle Times as reprinted by The Spokesman-Review, KOMO/KATU), and the institute's own posts and campaign site, preferring the outlets' published wording to later summaries.
  5. Searched Washington Public Disclosure Commission contribution and expenditure data for the No committee (No Hate in WA State) for any payments to or from the institute, and for the committee's reported polling.
  6. Used FactHub's coded audit of Washington news coverage for how often the claim ran without context.
  7. Checked how each side uses the word 'lie', and recorded the limits of each line of evidence, especially that the polling is unreleased and described only by an interested party. FactHub did not contact the campaigns or the institute.

Editorial note: Scope: this article checks the role of the genital-exam claim in the campaign against I-638, as shown by the No campaign's materials, the Northwest Progressive Institute's public statements about its polling, and FactHub's audit of news coverage. It does not rate the exam claim again; FactHub's genital-exam and officials' claims checks do that. It does not evaluate the polling itself, which has not been released, or the merits of the measure. FactHub did not contact either campaign or the institute; all material is from public sources. This check will be updated if the institute releases its results. No external specialist review has been recorded.

Expert-review status

No external specialist review has been recorded.

Funding and conflicts

Funding: No external funding for this piece.

Ownership: Published by the FactHub Research Team.

Conflicts: None known.

Sources

Sources are labeled by kind, with what this fact check takes from each, so readers can check the evidence independently.

  1. FactHub record FactHub. FactHub dataset: Initiative 638, the campaigns' claims in their own words (v1)

    FactHub's dataset of the Yes and No arguments and rebuttals in the 2026 voters' pamphlet, quoted verbatim with page locators.

    • The No argument's heading says doctors and nurses warn the measure requires invasive genital exams on girls.

    • The same No argument describes the rule as invasive examinations or expensive genetic or hormone tests, naming the alternatives to an exam.

    • The No rebuttal repeats that doctors say the measure will subject girls to new invasive genital examinations.

  2. Government Washington Secretary of State. Initiative Measure No. IL26-638, final filed text (filed June 2, 2025)

    The measure's full text; Section 3(2) contains the verification requirement and its three permitted bases.

    Reliability: The official filed text posted by the Secretary of State. It is the measure itself; the sponsor wrote it.

    • The provider may rely on any one of anatomy, genetic makeup or testosterone, so no exam is required.

      What the source says
      relying only on one or more of the following: The student's reproductive anatomy, genetic makeup, or normal endogenously produced testosterone levels.
      Sec. 3(2)
  3. Party to the dispute No Hate in WA State. 100+ doctors and other medical providers issue statement opposing IL26-001 and IL26-638 (August 24, 2026)

    The No campaign's release of a statement signed by doctors and other providers opposing the measure.

    Reliability: Has a stake in this finding. Published by the registered committee opposing I-638, which wrote the No argument in the voters' pamphlet.

    • The No campaign's doctors' statement warns of a 'reproductive organ exam' but itself names genetic or hormone testing as the alternative.

      What the source says
      Under IL26-638, all girls who want to play on a team at the K-12 level will need a medical certification of her sex defined as a physical “reproductive organ exam,” or costly genetic or hormone testing.
      Release body
  4. Party to the dispute No Hate in WA State. About I-638

    The No campaign's explanation of its arguments.

    Reliability: Has a stake in this finding. The committee opposing I-638, which wrote the No argument in the voters' pamphlet.

    • Qualifies: The campaign's website leads with the exam warning but uses the hedged 'could force'.

      What the source says
      I-638 could force invasive genital exams on girls just to participate in elementary, middle or high school sports
      Point 1
  5. News report KUOW Public Radio. Polling shows ban on trans girls in girls' sports could pass in November (October 5, 2026)

    Public radio story on campaign polling, including the Northwest Progressive Institute's description of its own unreleased polling.

    Reliability: Public radio reporting. The polling description comes from the institute's founder; KUOW did not see the results.

    • The institute's founder says voters who read the ballot language tend to support the measure.

      What the source says
      Voters tend to support banning trans girls from competing with cisgender girls after they read the language used to describe the initiative as it will appear on the November ballot, according to Andrew Villeneuve, the founder of Northwest Progressive Institute, a left-leaning think tank based in Redmond that has done some polling on the issue.
      Paragraph on Northwest Progressive Institute polling · Andrew Villeneuve, founder, Northwest Progressive Institute (paraphrased by KUOW)

    • Villeneuve says voters who do no prior research are poised to vote yes.

      What the source says
      If they do no prior research and they just open up their ballot to vote at their kitchen table
      Quote from Villeneuve · Andrew Villeneuve, founder, Northwest Progressive Institute

    • Villeneuve says support falls once voters learn genital exams could be required of all girls, which he frames as understanding how the measure works.

      What the source says
      But voters are far less likely to support the initiative when they have a more in-depth understanding of how it would work, Villeneuve said. Once they found out that genital exams could be required of all girls, for example, they were less likely to support the initiative, he said.
      Paragraph following the Villeneuve quote · Andrew Villeneuve, founder, Northwest Progressive Institute (paraphrased by KUOW)

    • Qualifies: KUOW did not see the institute's results; it reports only Villeneuve's description.

      What the source says
      Villeneuve did not release the results of this polling to KUOW but described it in broad strokes.
      Paragraph on Northwest Progressive Institute polling
  6. News report The Seattle Times (via The Spokesman-Review). All eyes on WA as voters consider trans athlete initiative (Daniel Beekman and Ryan Nguyen, October 25, 2026)

    Seattle Times story on the I-638 campaign, reprinted by The Spokesman-Review, including campaign and advocacy-group polling.

    Reliability: Newspaper reporting. The polling descriptions come from the groups themselves; the story does not report seeing any results.

    • The institute says its unreleased polling has consistently shown majority support among voters shown the ballot language.

      What the source says
      Unreleased polling from the Northwest Progressive Institute has consistently shown majority support among Washington voters who are presented with initiative language as it appears on the ballot, said Executive Director Andrew Villeneuve.
      Polling section · Andrew Villeneuve, executive director, Northwest Progressive Institute

    • Villeneuve says the measure will likely pass unless opponents break through with details like a potentially invasive exam, a hedged version of the claim.

      What the source says
      The results mean it stands a decent chance of passing unless opponents can “break through” to voters with concerning details about the consequences of I-638, like how it could require a potentially invasive physical exam for girls, Villeneuve said.
      Polling section · Andrew Villeneuve, executive director, Northwest Progressive Institute

    • Qualifies: Other groups' polling points different ways: the Yes campaign says it is likely to pass; a liberal group says many voters are undecided.

      What the source says
      Let’s Go Washington – the conservative political committee backing the initiative – said its polling indicates I-638 is likely to pass, while the liberal Ballot Initiative Strategy Center said its polling has pointed to many voters being undecided or persuadable.
      Polling section
  7. News report KOMO News. New polling shows support for Washington transgender girls sports initiative (KOMO/KATU, 2026)

    Television news story on I-638 polling, shared by KOMO and its sister station KATU.

    Reliability: Local television news; the institute declined to share results with the reporter.

    • Qualifies: The institute opposes the measure and declined to share its polling results with reporters.

      What the source says
      The Northwest Progressive Institute, which opposes the initiative, told KATU it has commissioned extensive polling on the measure but has not released its findings. The organization declined to share any results with KATU.
      Paragraph on the Northwest Progressive Institute
  8. Advocacy group Northwest Progressive Institute. Brian Heywood's IL26-638 (subjecting young female athletes to invasive genital exams) gets certified (Andrew Villeneuve, January 22, 2026)

    The institute's blog post on the measure's certification, describing its role in the opposition.

    Reliability: Has a stake in this finding. The institute opposes I-638 and urges a No vote; this is its own account of its role.

    • The institute says it belongs to the coalition opposing I-638.

      What the source says
      Washington Families For Freedom, the coalition NPI belongs to that is opposing IL26-638 and IL26-001
      Paragraph quoting Shannon McCann

    • The institute says its Permanent Defense project is working with the coalition to defeat the measure.

      What the source says
      NPI’s Permanent Defense project is working with WFF to secure the defeat of IL26-638
      Closing paragraph

    • Qualifies: In January, before describing any polling, the institute said in its own voice that the measure requires invasive exams on all girls.

      What the source says
      Requiring invasive exams of “reproductive organs” on all girls who want to play sports, even those as young as eleven, violates their privacy, increases chances of abuse, and discourages girls from the benefits of being on a team. Boys are exempt.
      List of effects
  9. Advocacy group Northwest Progressive Institute. Section 3 of Brian Heywood's Initiative 638 would require Washington girls to prove they have a vagina just to play sports (Andrew Villeneuve, October 6, 2026)

    The institute's blog post on Section 3, written the day after the KUOW story it quotes.

    Reliability: Has a stake in this finding. The institute opposes I-638; the post ends by urging a No vote.

    • Qualifies: In October the institute again described the rule as an anatomy requirement for all girls, though the text allows genetics or testosterone instead.

      What the source says
      638 explicitly denies trans girls the opportunity to participate in girls’ sports with their friends, and enforces that prohibition by requiring all girls who want to play sports to prove that they have a vagina before they can participate.
      Third paragraph
  10. Party to the dispute Permanent Defense PAC. Wrong for Washington: Vote NO on 645, 001 and 638

    Campaign site run by the institute's political committee against I-638 and two other measures.

    Reliability: Has a stake in this finding. Paid for by Permanent Defense PAC, a registered committee opposing I-638; the site calls itself a Northwest Progressive Institute project.

    • The institute's campaign against the measure is run through its own committee, Permanent Defense PAC.

      What the source says
      Paid for by Permanent Defense PAC
      Footer

    • Qualifies: The institute's site names No Hate in WA State as the coalition opposing the measure, a group separate from the institute's own committee.

      What the source says
      No Hate in WA State, the coalition opposing 001 and 638
      Section on 001
  11. Government Washington Public Disclosure Commission. Expenditures by candidates and political committees (open data), No Hate in WA State, polling entries

    State campaign-finance expenditure records for No Hate in WA State, filtered to the polling and research code.

    Reliability: Data reported by the committee itself to the state regulator and published on the state open data portal.

    • Qualifies: The No committee reports paying for its own polling, separate from the institute's; its results are not public.

      What the source says
      Safety Act repeal ballot polling fee - $39200 opposing IL26-001 $39200 opposing IL26-638
      Expenditure dated 2026-06-08, New River Strategies LLC
  12. FactHub record FactHub. FactHub fact check: Few mainstream I-638 news stories reported the facts that answer opponents (v6)

    FactHub's coded audit of Washington news coverage of I-638, with the counts behind each claim.

    • In mainstream news, the genital-exam claim ran without context in 14 stories and with context in 14.

  13. Party to the dispute Let's Go Washington. LGW outlines double standards with SOS and addresses AAP (August 27, 2026)

    Press release from the committee sponsoring I-638.

    Reliability: Has a stake in this finding. The committee backing I-638; its accusation is part of the campaign.

    • Qualifies: The Yes campaign accuses the opposition of lying, a characterization FactHub does not adopt from either side.

      What the source says
      The opposition has lied about this and attempted to twist reality.
      Paragraph on the AAP conversation
  14. Party to the dispute Jess Grant. Dishonest Politics (Substack, October 22, 2026)

    Essay by a co-author of the Yes argument in the voters' pamphlet.

    Reliability: Has a stake in this finding. Written by a co-author of the official argument for I-638.

    • Qualifies: A Yes argument co-author calls the exam claim a lie; FactHub rates the claim, not motives.

      What the source says
      But the NHWS campaign has done more than bend the truth; they’ve invented a fantastical lie designed to inflame public opinion and – more importantly – raise campaign funds.
      Opening section · Jess Grant, co-author of the Yes argument
  15. FactHub dataset Initiative 638: the campaigns' claims in their own words
    • Vote No Because Doctors and Nurses Warn It Requires Invasive Genital Exams On Girls
      Committee for the argument against Initiative IL26-638 (Justin Gill, APRN, and five co-authors), Authors of the official voters' pamphlet argument against IL26-638, · In the dataset
    • Section 2 says doctors must subject girls to invasive examinations of their "reproductive organs," or expensive genetic or hormone tests.
      Committee for the argument against Initiative IL26-638 (Justin Gill, APRN, and five co-authors), Authors of the official voters' pamphlet argument against IL26-638, · In the dataset
    • Doctors say this poorly written measure will subject girls to new invasive genital examinations.
      Committee for the argument against Initiative IL26-638 (Justin Gill, APRN, and five co-authors), Authors of the official voters' pamphlet argument against IL26-638, · In the dataset

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{"@context":"https://schema.org","@type":"ClaimReview","url":"https://facthub.org/n/article/wa-i638-exam-claim-persuasion/1","datePublished":"2026-10-26","dateModified":"2026-10-26","author":{"@type":"Organization","name":"FactHub","url":"https://facthub.org/"},"claimReviewed":"The No campaign\u0027s lead argument against I-638 is that it requires genital exams, and an allied group says its polling shows that argument turns voters against the measure.","reviewRating":{"@type":"Rating","alternateName":"True"},"image":"https://facthub.org/node-assets-v2/article/wa-i638-exam-claim-persuasion/1/drop-box/social-1200x630.jpg"}

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