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.

What the ballot committees reported, on each side
Supporting the measure
its own scale
- Colorado, 2022US$5,807,698.30
- Massachusetts, 2024US$7,752,198.94
Opposing the measure
its own scale
- Colorado, 2022US$50,986.00
- Massachusetts, 2024US$137,072.50
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.
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@
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.