Heywood is the largest Yes donor; unions and a foundation lead No

What this chart asks

Who is paying for each side of the I-638 campaign?

Why it is shown this way

• Stacked bars show each committee's total and its makeup in one view.
• Brian Heywood is shown as his own group because the No campaign's pamphlet names a single donor; the No side's largest donors (unions, a foundation) are groups of the same size or larger.
• The y axis starts at zero so bar heights compare totals directly.

Data and accessibility

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Dataset wa-i638-campaign-finance, analysis raised-by-side-and-donor-group

Sources

This chart draws on the sources of the dataset versions it visualizes.

Washington I-638 campaign money by side, donor and measure (2025-26)

1. Washington Public Disclosure Commission: Contributions to Candidates and Political Committees (data.wa.gov kv7h-kjye) Every itemized contribution to Let's Go Washington (HEYWL--535) and No Hate in WA State (FREEW--138), 2025 and 2026 election years

   Retrieved October 23, 2026. Public record (RCW 29B); Washington open data. Public disclosure data; redistributed in aggregate with attribution

   Reliability: Government. Filed by the committees themselves under Washington's campaign disclosure law and published by the PDC. Committees can amend reports, and in-kind values are the committees' own estimates.

2. Washington Public Disclosure Commission: Expenditures by Candidates and Political Committees (data.wa.gov tijg-9zyp) Each committee's itemized expenditures and their stated purposes, used to assign spending to I-638

   Retrieved October 23, 2026. Public record (RCW 29B); Washington open data. Public disclosure data; redistributed in aggregate with attribution

   Reliability: Government. Purpose descriptions are written by the filing committee. The PDC does not verify how a committee splits shared costs between measures.

3. Washington Public Disclosure Commission: Campaign Finance Summary (data.wa.gov 3h9x-7bvm) The list of committees registered for or against I-638, the measures each covers, and their 2026 totals

   Retrieved October 23, 2026. Public record (RCW 29B); Washington open data. Public disclosure data; redistributed with attribution

   Reliability: Government. Totals are computed by the PDC from committee filings and updated as reports arrive.

4. Washington Public Disclosure Commission: Loans to Candidates and Political Committees (data.wa.gov d2ig-r3q4) Brian Heywood's loans to Let's Go Washington

   Retrieved October 23, 2026. Public record (RCW 29B); Washington open data. Public disclosure data; redistributed with attribution

   Reliability: Government. Loans are reported by the borrowing committee, with the lender's name.

5. Washington Public Disclosure Commission: Independent Campaign Expenditures and Electioneering Communications (data.wa.gov 67cp-h962) Independent expenditures naming I-638 (for the size check in the limitations)

   Retrieved October 23, 2026. Public record (RCW 29B); Washington open data. Public disclosure data; redistributed with attribution

   Reliability: Government. Reported by the sponsors of the advertising; the portion attributed to each measure is the sponsor's own estimate.

6. Washington Public Disclosure Commission: Enforcement case 192919, Let's Go Washington (Sponsored by Brian Heywood) Outcome of the 2026 complaint about unreported in-kind contributions from a commentator (also in data.wa.gov a4ma-dq6s)

   Retrieved October 23, 2026. Public record. Public government record; short quotation

   Reliability: Government. The PDC's own case record, written by its staff. The complaint was filed on behalf of Washingtonians for Ethical Government.

Limitations

• Snapshot as of October 23, 2026; No Hate in WA State received $1.4 million from two donors between September 22 and October 21, and $95,000 more on October 22-23.
• Both committees work on more than one measure, so neither bar is I-638 money alone. The dataset's spending analysis shows how much each spent on I-638.
• Donor groups are FactHub's classification; see the dataset's limitations.