United States

Backers of Colorado’s 2022 psilocybin measure reported $5.8 million in contributions, and opponents reported $51,000.

Those are the totals filed by two supporting committees and one opposing committee. Massachusetts voters rejected Question 4 in 2024, and its money had a different shape.

Analysis · Finding · By Allan Kerr · Checked 11 September 2026

In brief

  • Both measures were funded on one side, and the money had a different shape in each state. In Colorado it came almost entirely from organizations, while in Massachusetts it split roughly evenly between organizations and individuals. What neither register can tell you is who the organizations were, because one of them appears in both registers under four different spellings and a contributor string records a name without establishing an identity.
An ink drawing on aged cream paper of a plain wooden ballot box on a table, with a tall stack of blank envelopes on one side, a single envelope on the other, and a small cluster of green-capped mushrooms growing at its base.
Colorado’s register records the money given to the committees on each side of its 2022 measure.Illustration for The Psilocybin Record
Each panel has its own scale, so bar lengths compare only within a panel.

Colorado reports contributions and Massachusetts reports receipts, over different windows, so the figures are never summed.

What the committees reported

A committee total measures paperwork on one side and says nothing about how hard the other side tried.

Colorado’s campaign-finance register (opens in new tab) reports $5,807,698.30 of contributions across the two committees supporting the 2022 natural-medicine measure (opens in new tab), which passed, against $50,986.00 for the committee opposing it. Massachusetts reports $7,752,198.94 of receipts for the committee supporting Question 4 in 2024 against $137,072.50 opposing, and voters rejected that measure (opens in new tab).

Those two pairs are not one number. Colorado reports contributions and Massachusetts reports receipts, gathered over different windows, and no proportion between any two of these figures appears on this page.

Where the money came from

Of the supporting committee’s own $5,789,588.30 in Colorado, which is a single committee and not the two-committee total above, $5,700,187.15 came from organizations against $89,401.15 from individuals, with $110.00 attributed to no class at all. Massachusetts itemises a wider window: of the $8,998,923.26 its register attributes to a contributor class, $4,746,492.26 came from organizations and $4,252,431.00 from individuals. That itemised total is not the $7,752,198.94 above counted twice; it is a different measure.

So one campaign was funded almost wholly by organizations and the other roughly half by people, and the word organizational does not carry across the pair. Two states is also a sample of two: Colorado’s shape will be read as typical because it is the more striking, and nothing in either register makes it typical of anything.

What a register cannot tell you

The organization that appears in both registers is written four ways, by whoever was filling in the form that day. Until somebody reconciles spellings like those by hand, the register cannot answer the question people actually ask of it, which is who gave what, and the attribution underneath the totals above is only as good as the typing.

This piece does not name that contributor, or any other, because naming the largest organizational giver in a state from a register that cannot reliably distinguish one giver from another would be asserting an identity the source does not establish.

Colorado’s lobbying register

Colorado’s lobbying register (opens in new tab) is the only one of the five this project holds that answers a query cleanly. On the 7 September 2026 read it carried 530 registrations naming a natural-medicine or psilocybin subject across four fiscal years, which fold down to 49 client organizations once the names are reconciled. Two hundred and ninety of those rows carry the declared position Monitoring, which is a lobbyist telling the state they are watching, and only eight of the 49 clients attach to the psilocybin value chain at all; the rest are hospitals, counties, cities, professional bodies and sheriffs.

Registration is not influence, and the register says so itself in the position field.

All of this is one state’s register. Oregon’s Measure 109 money and the federal lobbying half are both unread for this work, so nothing here describes a national picture of policy money.

Every figure above is re-derived from a state register: Colorado’s campaign-finance and lobbying registers, and the Massachusetts Office of Campaign and Political Finance, each with the date it was read. No figure is transcribed from a summary or a news report.

What is not here: any Colorado licence fee, which is unpublished in anything read for this work; any name of any contributor; Oregon’s Measure 109 committees; and the federal lobbying disclosures.

Neighbouring questions

Who pays for the trials, and who owns the companies, are in the money map. Who is allowed to make the drug at all has its own piece.

Corrections. Write to corrections@psilocybinlegalization.com. Anything this piece gets wrong is corrected on the page, dated, with the change stated.

Corrected 22 September 2026. An earlier headline said two states legalised psilocybin by ballot. Colorado’s measure passed in 2022; Massachusetts voters rejected Question 4 in 2024. The piece was also edited for length on the same day.