Information Regarding 2024 Presidential Nomination Process

In 2022 the Missouri General Assembly passed a law eliminating the March Presidential Preference Primary. The selection of presidential nominations for the November 2024 will be under the direction of each established political party. Missouri statutes RSMo 115.776 created the caucus system for established state political parties for the purpose of nominating a candidate for the president of United States.

The Secretary of State’s Office has contacted each of the established political parties and has listed information below in regards to the process they each will follow to determine how they will select their presidential nominee.

Missouri voters should review the information provided by the established political parties, if they wish to be involved and participate in a specific party nomination process. 

For Missouri registered voters who wish to voluntarily affiliate with a political party you can register using the SOS website or by contacting your local election authority.

Click here to change or establish your political party affiliation. 

Established Political Parties

The parties are displayed in the order they will appear on the ballot as set forth by Section 115.239, RSMo.

Republican Party
428 E. Capitol Ave. Suite #300
Jefferson City, MO 65101 
Phone: (573) 606-0402  

The Missouri Republican Party Presidential Caucus will be held in each County and the City of St. Louis at 10:00 a.m. on March 2, 2024. Participants must be registered to vote on or before February 19, 2024. Caucus-goers should bring a valid, unexpired, government-issued photo ID.


"The caucus will be the only way Republicans can vote in the presidential primary. The Presidential Preference Primary that most voters are used to did not pass out of the Missouri Senate last session, so we have been working hard to roll out tools to make it easier for people to participate.

The first tool is the pre-registration link where caucus attendees can register early to make the check-in process on the day of the caucus quicker."

Pre-Registration and Caucus Information:
Locate Your Caucus:

Democratic Party
4218 Roanoke Rd., Ste. 304 
Kansas City, MO 64111
Phone: (573) 777-1364 
Fax: (573) 777-3158 

The Missouri Democratic Party will hold a presidential preference primary election in each county from 8:00 a.m. to 12:00 p.m. on March 23, 2024. Mail-in ballots may be requested by or before March 12, 2024 and must be returned by or before 10:00 a.m. on March 23, 2024. Voters must be registered on or before February 21, 2024.

Presidential Primary Information:
Delegate Selection Process:

Libertarian Party
604 N. Maguire, Ste. C
PO Box 1099
Warrensburg, MO 64093
Phone: (844) 886-8357 

The Missouri Libertarian Convention will take place on February 24, 2024 at the Holiday Inn Earth City in St. Louis.

Convention Information: