FactHub data
FactHub datasets organize public-source data into reusable tables with documented provenance, transformations, field definitions, quality checks, and limitations.
Published data
39 datasets
IT power capacity of the five largest operating AI data centers tracked by Epoch AI as of mid-2026, with FactHub's conversion to annual electricity and the number of average U.S. homes using the same amount.
Every story in our sample of Washington news and opinion coverage of Initiative IL26-638 (girls' interscholastic sports), coded with one codebook: advocates quoted per side, first and last word, rebuttals, campaign claims repeated with or without context, twelve facts that answer one side's arguments, loaded terms and factual errors in the outlet's own voice. Includes derived tables of fact rates, sourcing balance and claim checks by outlet group.
Contributions and spending reported to the Washington Public Disclosure Commission by the two main committees on Initiative IL26-638: Let's Go Washington (Sponsored by Brian Heywood), the Yes committee, which also backs IL26-001 and IP26-645, and No Hate in WA State, the No committee, which also opposes IL26-001. Covers the 2025 and 2026 election years through October 23, 2026: donors by type and location, how concentrated each side's money is, and how much of each committee's spending its own reports tie to I-638. Also lists every other committee registered on I-638.
Prices for each way Washington Initiative IL26-638 lets a provider verify a student's sex: a record or exam at a routine checkup, a serum testosterone test (CPT 84403), or a chromosome test (karyotype, CPT 88230/88262/88291; SRY FISH components 88271/88275). Each price is labeled by what it is: what a family pays, what a payer pays, what labs bill, a consumer cash price, or a figure reported in the press.
NFHS participation counts by state and sex for nine school years, Census population aged 14-17 by sex, and the dates of the 27 state laws limiting girls' school teams to female students, with difference-in-differences comparisons of states with and without such laws.
An anonymized copy of the HeCheated.org Washington K-12 table, the source of the Yes on IL26-638 claim of "269 placements ... 74 firsts and 156 top-three finishes", with each entry classified by meet type, level, event type and finish, plus FactHub's checks of a sample against official and independent results. Athletes are coded by letter; no names, schools, meet names or race classifications are included.
Every U.S. state law or regulation (28 as of October 2026) that limits girls' school sports to students of female sex, coded from its official text for coverage (grades, college, private schools), how sex is determined or proved, and enforcement (private lawsuits, penalties on schools), beside Washington Initiative IL26-638 on the November 3, 2026 ballot.
Every factual claim and prediction in the official arguments for and against Washington Initiative IL26-638 in the 2026 state voters' pamphlet, quoted verbatim with its heading. FactHub fact checks cite these statements so each rating rests on the campaign's exact words.
Annual Link light rail boardings, boardings recorded without fare media, fare revenue, operating expenses and farebox recovery, compiled from Sound Transit's annual Fare Revenue Reports, with FactHub's derived fare-media share and an estimate of fare revenue not collected compared with the 2019 rate.
Lifetime WA Cares payroll premiums (0.58% of all wages) for workers at different wage levels, compared with the program's $36,500 maximum lifetime benefit, both as simple inflation-adjusted totals and as present values, using the economic assumptions in the state actuary's 2024 valuation. Includes break-even wages under alternative assumptions, outcomes at points of Washington's 2025 wage distribution, and the program rules the calculation uses.
Every factual claim in the official arguments for and against Washington Initiative 645 in the 2026 state voters' pamphlet, quoted verbatim with its heading, plus the governor's release that first used the 460,000-families figure. FactHub fact checks cite these statements so each rating rests on the campaign's exact words.
Final and enacted Washington operating-budget appropriations (Near General Fund and all funds) and NGF-O revenue by biennium, with population, consumer-price, government-price and personal-income benchmarks; spending above the population x inflation benchmark by area and program; maintenance-level vs. policy steps; estimated revenue from post-2013 tax legislation; K-12 district revenue by source; a NASBO cross-state comparison; and attributed statements on budget growth.
IRS Statistics of Income data on Washington returns with AGI of $1 million or more (with U.S. data for the years Washington's class is missing), Washington's general fund revenue by source, and FactHub's illustrative back-cast and crash scenarios for a 9.9% tax on income above $1 million.
Top statutory state individual income tax rates for the ten highest-rate jurisdictions plus Washington, from the Tax Foundation's 2026 table and state law as of October 21, 2026; Washington's rank among the 50 states once ESSB 6346 takes effect in 2028; effective (average) state income tax for married couples with $1.5 million, $2 million and $5 million of wages in Washington, Oregon, California and Massachusetts; and the components of the Tax Foundation's 18.037% combined Seattle rate on wages.
Eighteen comparisons of an official (or, for one row, independent) revenue estimate with the revenue later collected or officially re-estimated, for ten state and local taxes on high incomes enacted between 2004 and 2025: California Propositions 30 and 63, the Massachusetts 4% surtax, New York's 2009 surcharge, Maryland's 2008-10 millionaire bracket, Oregon Measure 66, Multnomah County's Preschool for All tax, Metro's Supportive Housing Services tax, and Washington's capital gains tax and 2.9% surcharge. A second table lists published estimates of how much behavioral responses reduced (or were expected to reduce) such revenue, and the behavioral assumption in Washington's 2026 income-tax estimate.
IRS Statistics of Income figures for Washington returns with adjusted gross income of $500,000 to $1 million and $1 million or more (tax years 2019-2022), including joint returns, wages, pensions, IRA distributions, taxable Social Security, pass-through income and charitable deductions; the recorded votes on 13 floor amendments to ESSB 6346 (2026); worked examples of the tax for ten illustrative households under the law as enacted; and a projection of paying households under the law's every-other-year inflation adjustment.
Net collections of Washington's capital gains excise tax for tax years 2022-2025, the share paid by the 10 largest payments and the top tenth of payments, and the Department of Revenue's pre-enactment estimates, compiled from DOR and OFM documents.
IRS counts of Washington tax returns reporting $1 million or more (2019-2022), Washington capital gains tax collections (tax years 2022-2025), the share of Washington households expected to pay the 2026 millionaires tax, and a projection of the real value of the tax's $1 million standard deduction under the indexing formula in ESSB 6346 section 316.
Contributions reported to the Washington Public Disclosure Commission by the committee opposing Initiative 645 (No on 645), the committee supporting it (Vote Yes Repeal the Income Tax), and Let's Go Washington, which backed I-645 and two other 2026 measures. Donors are grouped by type, with labor organizations split by whether their members are mostly public employees. Also includes Let's Go Washington's 2026 spending on I-645 and Brian Heywood's own contributions, union contributions to the legislators who voted on ESSB 6346, and the state cost of four 2025-27 union contracts.
118 news, broadcast, opinion and editorial stories about Washington's I-645 (repeal of the 9.9% tax on income over $1 million) from 26 outlets, published June 1 to Oct 21, 2026, each coded with one codebook for sourcing balance, unchecked campaign claims, omitted key facts, terminology and factual errors. Includes summary tables by outlet group and a blind second-coder reliability check.
Every 'For transfer to the state general fund' line in the final transfer sections of Washington's operating budgets for 2021-23, 2023-25 and 2025-27 (plus the 2019-21 list as amended in 2021), with source account, fiscal-year amounts, category and the verbatim budget text, and every transfer out of the general fund. Built to test the I-645 Voters' Pamphlet statement that Olympia moved money from dedicated accounts to the general fund 80 times in five years.
Every official estimate of what Washington's 9.9% tax on income over $1 million (ESSB 6346, 2026) would raise, by state fiscal year: the Legislature's fiscal note, the Economic and Revenue Forecast Council's June and September 2026 forecasts, and OFM's fiscal impact statement for Initiative 645, plus how the enacted 2027-29 budget outlook counts the revenue and the campaign statements that cite these figures.
Taxable value of a passenger vehicle, as a percentage of its base MSRP, by year of service under the depreciation schedule Sound Transit's motor vehicle excise tax (MVET) uses now and under the 2006 schedule in RCW 82.44.035 that state law says must replace it after the pre-2015 bonds are repaid. Includes a worked example for a $30,000 car at the 1.1% combined rate.
How much Seattle's JumpStart payroll expense tax raised each year, what the city expected it to raise, and how much each adopted budget sent to the General Fund and to affordable housing, from the City Budget Office's adopted and proposed budget books, with the 2020 spending-plan percentages for comparison.
Tables for checking claims about Washington's school spending and results: FY2024 per-pupil current spending for all 50 states and DC (Census Bureau); inflation-adjusted per-pupil current expenditures for Washington and the U.S., 2010-11 to 2020-21 (NCES); Washington public school enrollment, fall 2011 to fall 2022 (NCES); Washington's Kids Count education-domain rank for the Data Book years we could verify; and NAEP grade 8 math averages for Washington and the nation.
Every finisher in the WIAA 2A-4A boys' and girls' 1600m state finals 2022-2026, compared with the fastest Washington high-school girl ever (4:33.29, 2014) and the fastest U.S. high-school girl ever (4:21.81 over 1600m, 2025), with Washington girls' season leaders since 2014.
Washington state high-school track finals for 2022-2026, U.S. national high-school records, USA Swimming age-group time standards by single age, Paris 2024 Olympic winning marks checked against the official results, and published physical-trait reference data for males and females, with the male-female gaps computed by FactHub.
An itemized list of state tax and fee increases (230) and cuts or rollbacks (111) enacted by the Washington State Legislature in the 2017 through 2026 sessions. Each row is one individual change, not one bill, with type, who pays, status as of October 2026, a flag for debatable items, and a row-level source. Cuts are linked to the increases they were packaged with or roll back.
Official promises to end or reduce homelessness in Seattle and King County, quoted from primary sources, with the measured outcomes.
HUD System Performance Measures (time homeless, returns, first-time homelessness, exits to housing) for 67 large Continuums of Care, with Seattle/King County's trend and rank.
King County Point-in-Time homeless counts with HUD Housing Inventory Count beds by type, 2012-2026, and how King County's capacity compares with 66 other large Continuums of Care.
HUD Point-in-Time homeless counts for 67 large urban Continuums of Care joined to Census rent and population data, with tests of how much rent levels and rent growth explain, and where Seattle/King County falls.
Monthly users worldwide and the share of US adults using eleven social platforms, with each figure labeled as company-reported, third-party estimate, or proxy.
Half-yearly counts of legal demands to remove content that Twitter and X received worldwide, and the share they acted on, from the companies' own transparency reports.
For nine social platforms and 19 contested topics, what each platform's own written policy says it does: remove, restrict reach, allow, or not address the content, with a verbatim quote and link for every cell.
Annual EIA data on Washington in-state net generation by energy source (2001-2025), the state's hydro share and national hydro rank, generation versus retail sales and net interstate trade, Washington utilities' 2024 delivered fuel mix, and EIA-860/EIA-923 rankings of the largest U.S. power plants by capacity and by 2025 generation. FactHub-curated; not an official EIA, Reclamation or Washington State publication.
Weekly EIA retail gasoline prices for Washington and comparison regions (2015-2026), Washington cap-and-invest auction prices, and taxed fuel volumes, with saved analyses of the Washington-specific price change since 2023, quarterly comparison with auction-implied carbon cost, and estimated cost to on-road fuel users. FactHub-curated; not an official EIA or Washington State publication.
USDA NASS commercial apple production, value and acreage by state, 2000-2025, with Census of Agriculture acreage and saved analyses of Washington's share of the U.S. crop.
A documented 96-month series of FBI-reported Washington motor-vehicle-theft offenses, clearances, rates, population coverage, national benchmarks, and descriptive pursuit-law periods. This is a FactHub-curated research dataset, not an official publication of the FBI or Washington State.
