Not Grandmas With Clipboards: Missouri’s Ballot Initiative Industry
Opponents of Amendment 4 like to cast a grassroots image of the initiative petition process. They paint a picture of local volunteers gathering signatures for a cause they believe in.
The truth is, major campaigns now rely on attorneys, paid petition firms, consultants, donors, and media buyers. Signature gathering is one stage in a much larger operation.
Changes to our state constitution should reflect real statewide support, not who has the most money. Amendment 4 requires initiative petition campaigns to win majority support in each of Missouri’s eight congressional districts and guarantees that voters get the full text of initiative petitions with their ballots.
Missouri Ballot Campaigns Raised Over $110 Million
That was the third-highest total among the states tracked by Ballotpedia, behind California and Florida. Missouri accounted for 8.2% of all ballot-measure contributions nationwide.
Missouri attracted more than $110 million in ballot-measure campaign contributions in 2024.
— Liberty Alliance (@LibertyAllUSA) July 15, 2026
Missouri’s broken initiative petition system makes our constitution a target.
Vote #YesOn4. #MOLeg pic.twitter.com/g6hGJA5mUo
Based on 2020 Census population figures, that equals about $17.60 for every Missouri resident.
For a state with roughly 6.2 million people, that is an enormous amount of political money.
Statewide Petition Drives Cost Millions
By the time voters see a circulator outside a grocery store, a campaign may already have millions of dollars behind it.
Campaigns hire professional signature-gathering companies to collect and process the signatures needed to reach the ballot.
Missourians for Constitutional Freedom, the campaign behind the 2024 abortion amendment, reported spending about $3.2 million on signature gathering and processing through March 2024.
The campaign later submitted more than 380,000 signatures, more than twice the number required.
Campaigns build large cushions because many signatures will be rejected. Some signers are not registered. Others provide the wrong address, sign in the wrong district, or leave out required information.
A larger budget can produce a larger cushion and a better chance of making the ballot.
Getting on the Ballot Is Only Step One
Once a measure qualifies, spending shifts toward persuasion.
Campaigns pay for legal work, staff, mail and statewide advertising.
After sports betting stalled in the General Assembly, professional sports franchises and gambling companies turned to the initiative process.
DraftKings, FanDuel and Missouri’s professional sports teams funded a $43 million campaign. Caesars Entertainment funded a $14 million opposition effort.
Governor Kehoe raised about $13 million to win his race in 2024. The campaign supporting the sports betting amendment raised about $45.5 million on its own.
— Protect MO Voters (@MOProtectVoters) June 3, 2026
Big-money campaigns are aiming directly at Missouri’s Constitution.
Amendment 4 is common sense. #YesOn4 #MOLeg pic.twitter.com/RKuzTZ5GBi
The amendment passed with 50.05% of the vote.
The final margin was 2,961 votes out of nearly 3 million cast.
A $43 million campaign changed the Missouri Constitution by fewer than 3,000 votes.
Money Buys a Full Campaign Operation
Money can’t guarantee victory, but it can buy the tools needed to compete: legal drafting, signature collection, court fights, staff and advertising.
Amendment 4 would require citizen constitutional amendments to win a majority in each congressional district.
Wealthy special interest campaigns could still spend millions on signatures, lawyers and advertising but they would also have to win across Missouri before changing the Constitution.
In 2024, ballot campaigns brought more than $108 million into the state. One campaign spent about $3.2 million on signature gathering and processing alone. Another spent $43 million and won by 2,961 votes.
Amendment 4 would require more than the narrowest possible statewide victory to change our state’s foundational document.
Andy Bakker
Executive Director
Liberty Alliance USA