Voting in Missouri

Change My State

Presidential Primary Election

Election Date (D) 
Election Date (R) 
Voter Registration Deadline (by mail (D) )
Voter Registration Deadline (by mail (R) , in-person, online)

The upcoming election is a presidential primary. Learn About Presidential Primaries

Polling place hours: 6 a.m. to 7 p.m.

Register to Vote

How to Vote in Missouri

Learn about all the options to vote in Missouri to make a plan to vote that works for you!

Frequently Asked Questions

Missouri Board of Elections Phone Number: (573) 751-2301

Missouri Board of Elections Website

Having trouble at the polls?

Call or text: 1-866-OUR-VOTE

Register to Vote in Missouri

Whether you are registering to vote for the first time, or need to update your address, name or party affiliation - we've got you covered!

Am I Registered?

Not sure if you are eligible to vote due to a felony conviction?
Click here to learn more.

Missouri Frequently Asked Questions

Absolutely! You can check your voter registration online on Missouri’s elections office website here, or you can contact the Board of Elections at (573) 751-2301.

It can take several weeks. Most states send out voter registration cards within 5 to 7 weeks after receiving the registration. If you do not receive a registration card in the mail, contact your state election office to confirm you are registered. Find your state’s contact information in our How to Vote in Your State section on this page! In any event, you should verify your registration a week prior to the voter registration deadline in your state in case you need to fill out a new registration form or correct your form.

Elections take place all the time throughout the year, and odds are, you probably have an election coming up in your state! In addition to the presidential election and midterm elections, you have statewide, countywide and municipal elections that you can make your voice heard in. Make sure you know when your upcoming elections are so that you don’t miss a single one! Check out when your next election is here.

Your state doesn’t provide an online ballot tracking system. You can contact your county clerk and ensure that they received your ballot. Find their contact information here.

YES you are able to register to vote at your student address. You should provide your official campus mailing address as well as the actual physical address of your on or off campus residence when registering to vote. You must have some sort of proof of address and residency that can be presented at your polling place (mail, a student ID, etc.). For more information, we suggest visiting your state’s elections office website. Remember: you can only register to vote and vote in one place, whether that is your student address or your home address!

YES, unhoused voters can register to vote and use their voice in Missouri’s elections. Unhoused voters or voters without a permanent address may list a shelter address, street corner, or park as their address. For more information on voting while unhoused, visit our friends at the National Coalition for the Homeless.

YES. In this case you must register at the last address you had before you left the USA, or at the address to which you will return to when returning to the USA (you must present some indication of a present intent to return and live there – e.g. vehicle registration, driver’s license, property ownership, family, etc). If you have never had a permanent address in the United States but are a citizen you are allowed to register at an address you plan on moving to or an address where you currently have family living. Access more information on voting overseas here.

You may call the voting rights hotline at 866 687-8683, if informing another poll worker isn’t successful. They have lawyers ready to help you. Additionally, you can call the civil rights division of the U.S Department of Justice.

You can also find Missouri’s elections office here and contact them by phone at (573) 751-2301.

Vote By Mail

Request and track

Notice: Mail-in voting is a convenient and safe way to vote, but your ballot might not count if it’s submitted late or with errors. So follow the directions below on how to vote early or absentee and make your vote count in Missouri.

Vote By Mail Deadlines

Deadline to Request Ballot (Received by)
Deadline to Return Ballot (Received By)

Excuse required to vote by mail.

How Vote By Mail Works in Missouri

In Missouri, it is a two step process to vote by mail:

Step 1: Request your ballot NOW. You must have an excuse to qualify to vote with an absentee ballot. The deadline for your application to be received is 13 days before Election Day.

  • If you have never voted in Missouri before, include a copy of your photo ID with your application.

Step 2: Complete and return your ballot ASAP.

  • Sign your ballot in the presence of a notary. They must sign it, too.
  • Return in person to your local elections office on or before Election Day at 7 p.m. Find your local elections office here.
  • Or return your ballot by mail to your local election authority so that it is received by 7 p.m. on Election Day. We recommend mailing your ballot at least two weeks before as the post office is not always reliable. The best intentions will not matter if your ballot is received after Election Day - your ballot will not count.


Click Here to See Your Ballot

Witness or Notary Requirement

The absentee ballot envelope must be signed by a notary, election official, or other authorized oath administer.

Where to Sign Your Ballot

Remember to sign your return ballot.

Wait! Don't sign your ballot until you find a notary. You must sign the statement on the return envelope in the presence of a notary. They must sign the ballot, too.

How You Can Return Your Mail-in Ballot

If you return your ballot by mail, your postage is prepaid.

You can also drop off your ballot in person at your local elections office.

Can Someone Else Return Your Ballot For You?

Close relatives may return a ballot on your behalf.

Haven't used your ballot?

If you have an unused mail-in ballot and decide you would like to vote in person go to your polling site on Election Day. Bring your mail-in ballot if possible. The poll worker will confirm that your mail-in ballot was not used before allowing you to vote in person.

Opportunities to Fix Challenges to Your Ballot

Missouri does not offer voters a chance to address challenges to their ballot. Your ballot will not count if it is late, or you do not follow directions.

Voter ID

Do Voters Need ID?

Valid forms of identification include;

  • Unexpired Driver’s License
  • Unexpired Military ID Card
  • Unexpired U.S. Passport
  • Other Photo ID Issued by the U.S.

Any ID used to vote must be either unexpired or have expired after the date of the most recent general election.

Voter ID in Missouri

Find Your Ballot

Enter your address below to see what you can expect on Election Day.


Presidential Primaries

Primary Type (D): Mixed
Primary Type (R): Open

No party affiliation is required to participate in Missouri’s Republican caucus. To participate in Missouri’s Democratic primary, you may not be a registered republican voter. See Missouri’s Republican Party or Democratic Party sites for more details.

Automatic Registration

Your state automatically registers people to vote at the address on their drivers license or other state issued ID card. If you have moved but have not updated your ID with your new address, changed your name or want to add a political party selection, you must update your voter registration. Click here to check to see if you are registered to vote, and update your registration if needed.

Election Day Registration

You can register to vote and cast your ballot on Election Day at your polling place or local elections office. Bring a valid ID and proof of residence with you.

In-Person Absentee Voting

In-Person Absentee Dates

Dates and hours vary by county. Contact your Local Election Office for more information.

You can vote in-person absentee in Missouri

From October 24 to November 6, you may vote in person via a no-excuse absentee ballot at a location designated by your local election authority.


Some states have laws that specifically allow citizens to preregister at a certain age while others allow registration as long as you’re 18 by the next election. Preregistration means you’ll be automatically registered to vote on your 18th birthday without taking any additional steps.

In Missouri, you can preregister to vote if you are 17 and 6 months . Register to vote today!

Some states even let you vote in their primaries at 17 if you’ll be 18 by the general election so you can participate in the whole process!

You can not vote in the Missouri primaries if you are 17 by the next election.