Missouri ID requirements for voting by mail

COVID-19 Advisory: The rules for voting absentee or by mail in Missouri during the coronavirus pandemic are complex and vary depending on the excuse that the voter uses. Use this helpful link to find the information you need to cast your ballot for the August 4 primary.

If you need a photocopy of your ID to accompany your absentee/vote-by-mail ballot application and do not have access to a copier or printer, click here to learn how we can help.

Who is eligible to request an absentee ballot and vote by mail?

To be qualified to vote absentee, you must be:

  • Absent from your voting jurisdiction on Election Day
  • Incapacitated or confined due to illness or physical disability, or have primary responsibility of caring for an incapacitated or confined person
  • Restricted by religious belief or practice
  • Employed by an election authority at a location other than such voter's polling place
  • Incarcerated but have retained all voting qualifications
  • A certified participant in address confidentiality program because of safety concerns

First-time voters

When you register to vote or vote for the first time in a federal election in your state, you must prove who you are:
  • If you register to vote in person, you must show a driver’s license, state ID, or provide the last 4 digits of your social security number (SSN), if you have one.
  • If you registered by mail and did not include your state’s driver’s license number or the last 4 digits of your SSN, you must show an acceptable form of ID (see below) at your polling place.
  • If you apply for an absentee/vote by mail ballot and did not include your state’s driver’s license number or the last 4 digits of your SSN when you registered by mail, you must include a copy of an acceptable ID (see below).

Here is a list of acceptable IDs: Documents that prove who you are

Your state may have other ID requirements for voting in person or for absentee/vote by mail ballot.

Do you need to submit ID with your absentee ballot request?

Voters requesting an absentee ballot by mail who have registered by mail and have not voted in person are required to submit a copy of their personal identification unless they provided a copy with their registration application. Examples of acceptable identification are:

  • ID issued by state of Missouri, agency of the state, or local election authority of the state;
  • ID issued by U.S. government or agency thereof;
  • ID issued by institution of higher education within state of Missouri;
  • Current utility bill, bank statement, pay check, or gov’t document including check with name and address of voter;
  • ID approved by the Secretary of State of Missouri.


Do you need to submit ID with your ballot?

No, but the signature on your mail ballot must match other signatures on file and in some cases, you are required to have your ballot notarized.

Last update: June 26, 2020

Hannah Piercey