How to register to vote in Colorado

By NPR staff
  •   Last revised Friday, Feb. 13, 2026

Key links

General information Check voter registration status Register online Change registration

Deadlines for June 30 primary election

Online Register by Monday, June 22
By mail Postmarked by Monday, June 22
In person Register by Tuesday, June 30
Eligible voters can register at a voter service and polling center in their county through Election Day.

Last updated Feb. 13, 2026. Military and overseas citizen voters may have different registration deadlines.