Colorado General
The last day to register to vote in person is Election Day.
Same-day voter registration enables voters to register and vote at the same time. Same-day registration is also referred to as Election Day registration.
Standard registration deadline is Eight days before an election. Deadlines for voter registration drives are 22 days before an election.
(General)
Tuesday, November 3rd, 2026
Colorado General Election
Statewide Presidential Election
Registration Deadlines:
In Person: Tuesday, November 3rd, 2026
By Mail: Monday, October 26th, 2026
Online: Monday, October 26th, 2026