Platte County Primary Election Information

Election Day: Tuesday, August 18th, 2026

Sample Ballots: 2026 Primary Election Sample Ballots - All styles

***Ballots for the Primary election are based off your residence address and your party affiliation, if you have any questions about what ballot style is right for you, please contact our office, you can also view the district/precinct map on the elections home page.***

Proclamation: Click here

Candidate Filing Roster: Click here

Party Affiliation Deadline: Click here

Uniformed & Overseas Citizens Absentee Voting Act (UOCAVA): Begins July 2nd

For more information about UOCAVA voting, Click here.

Regular Absentee Voting: July 21st - August 17th.

To request an absentee ballot, complete this form: Absentee Request Form

Voter Registration Closed: Beginning August 4th, if new voters wish to register they must vote the same day. Voters can register to vote on Election Day. For more information, Click here.

Campaign Finance: Reports are accepted beginning on August 4th and are due by August 11th. Amendments are due by August 28th. Forms are available here: Fillable Form & Printable Form.

Election Results: Unofficial results will be posted on election night as results are reported. All results can be also found here.

Canvass Date: Friday, August 21st (*subject to change)

Please visit the Elections page for more detailed information regarding candidate filings, applications for office, previous election results and any additional information.