This Wednesday, July 11, is the deadline. You can register at any permanent voter registration site in your county, including libraries, colleges, city halls, and the courthouse. Mail-in registrations will also be accepted if they are postmarked by July 11.
Absentee ballots are also available from your county clerk. Check with the election official in your county to learn registration sites and where to get an absentee ballot.
The August 7 ballot features four Party Primaries (Democrat, Republican, Libertarian, and Constitution), along with one statewide issue and several local issues.
An "issues only" ballot is also available for those who don't want to vote in the primary races. Don't forget you must declare a party preference in the Missouri primary.
View the statewide ballot here