Presidential Caucus/Primary Date: March 2, 2024 for Republican caucus
March 23, 2024 for Democratic primary
Open or Closed: TBD
How to Vote in the Republican Primary/Caucus: FAQs Other Voting Questions (mo.gov)
March 2 Republican caucus: Those identifying as members of the Republican party will have the chance to participate in caucuses on March 2 in the county where they are registered to vote. They must present a valid photo ID to participate, in accordance with voter ID laws. Participants will be able to pre-register online prior to the caucus, although same-day registration will be available at the venue. If there is a majority of supporters for any one candidate, meaning anything over 50%, all delegates will represent that candidate as the county’s choice for the Republican presidential candidate. If none earn a majority, there will be a plurality, and delegates will be split proportionally between the selected candidates. Additionally, candidates with less than 15% of attendees in support will not qualify for representation at the state or congressional level. Supporters will be asked to declare for an alternate candidate. Each caucus participant must sign a solemn affirmation of their Republican party affiliation. It reads: “I hereby pledge my allegiance to the Missouri Republican Party. I believe in the principles of individual liberty, limited government, free markets, and a strong national defense. I commit to uphold the values of the Republican Party and to work to advance these goals. I am a strong and faithful Republican voter.” This statement affirms a voters’ choice to identify as a Republican, even if they have not previously voted for Republican candidates in a Missouri election.
March 23 Democratic primary: The Missouri Democratic Party states that all participants in the privately conducted primary must be registered voters who have declared Democrat as their party affiliation. There are ways to do this in advance, including updating party affiliation with local election authorities via voter registration forms. Although not yet finalized, the Democrat’s plan allows for voter to visit polls between 8 a.m. and noon on March 23. Mail-in ballots are available and will be distributed starting Feb. 12.