Missouri voters are deciding today on Amendment 4, a measure that would require citizen-initiated constitutional amendments to pass in all eight of the state’s congressional districts instead of by a simple statewide majority. If approved, it would create the nation’s toughest standard for amending a state constitution through the citizen initiative process.
The amendment would fundamentally alter how Missourians can directly amend their constitution when lawmakers decline to act. Under current law, a citizen-initiated amendment needs only a statewide majority to pass. Amendment 4 would add a second requirement: a majority of voters in each of Missouri’s eight congressional districts.
The practical effect is stark. A review of certified election returns by the Missouri Independent found that Amendment 4 would have blocked every citizen-led constitutional amendment Missouri voters have approved since 2020. Between 2020 and 2024, voters expanded Medicaid, legalized recreational marijuana, approved sports betting, and added abortion rights to the state constitution — each passing statewide with 53% or less. None carried all eight congressional districts under the maps in place at the time.
The measure would also have rejected a 2016 amendment barring state and local governments from imposing new sales taxes on most services — a measure backed by business groups and approved with nearly 57% of the vote. It won statewide by more than 375,000 votes but lost the St. Louis-anchored 1st Congressional District by roughly 31,500.
No other state currently has a voter approval requirement in each congressional district for constitutional amendments, according to Ballotpedia. The proposal is described as the first of its kind, and some observers believe it could inspire similar efforts in other states.
Amendment 4 applies only to citizen-initiated amendments. Constitutional amendments placed on the ballot by the legislature — including Amendment 4 itself — would continue to pass by simple statewide majority. Republican state Rep. Ed Lewis, who sponsored the measure, argues that citizens who gather signatures for an amendment should demonstrate broader geographic consensus. “If you’re going to change the constitution, shouldn’t it be broadly accepted?” Lewis said, according to the ABC News report.
Supporters, including the Missouri Farm Bureau and rural Republicans, contend that expensive campaigns powered by out-of-state money and concentrated in urban areas like St. Louis, Kansas City, and Columbia have rewritten the state constitution over the objections of much of rural Missouri. The Farm Bureau’s president, Garrett Hawkins, told the Missouri Independent that the organization’s members have pushed for decades to overhaul the initiative process because constitutional change has come to reflect money concentrated in cities rather than consensus across Missouri.
Opponents argue the amendment would weaken the initiative process for all voters, including rural ones. Derek Schriewer, immediate past president of the Missouri Association of Realtors, said the measure would allow a single district — whether urban or rural — to override all the others. The Realtors association has contributed millions to oppose the measure. Antwann Rhodes, a Realtor in south-central Missouri and treasurer of the Missouri Association of Realtors, told the Missouri Independent that Amendment 4 would give voters in one district veto power over the will of the majority elsewhere.
The amendment also includes provisions prohibiting foreign nationals and foreign governments from spending money on ballot measures and adding penalties for petition fraud. These components have drawn less controversy than the district-approval requirement.
Governor Mike Kehoe moved Amendment 4 from the November ballot to the August primary, when turnout is expected to be smaller and more Republican. The measure faces significant opposition funding: the Missouri Association of Realtors’ main campaign committee against the amendment reported millions in support, while Amendment 4’s backers reported around $16,000 cash on hand in their most recent disclosure.
Sources
- Missouri Independent — detailed reporting on Amendment 4’s impact, rural-urban debate, and analysis of how past amendments would have fared under the new standard
- ABC News / Associated Press — national context, comparison to other states, and quotes from supporters and opponents
- Ballotpedia — confirmation that no state currently requires congressional district approval for constitutional amendments
- Missouri Secretary of State — official ballot measure information and text
