Elections & Voter Information

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Regular Municipal Election Information

The Mayor and City Councilmembers are elected for four-year terms in Regular Municipal Elections, with one Councilmember elected from each of the four wards every two years and the Mayor elected every four years.  
 
Regular Municipal Elections are held on the first Tuesday in November in odd-numbered years. The 2027 Municipal Election will be held on Tuesday, November 2, 2027.  The 2027 Candidate Guidelines, which outline the requirements of candidacy, will be made available on this website by March of 2027 for those interested in running for City Council. In addition, a Candidate Briefing will be scheduled in June. Specific date, time, and location information will be posted as soon as determined.
 
The City Clerk’s office is responsible for conducting the Municipal Elections, as well as assisting Adams County with registering citizens to vote.
 

Voter Registration Information

Voters in City elections are registered electors who live within the Thornton City limits. Individuals may register to vote online through the Secretary of State's website, visiting the Adams County Election Office, City Clerk's Office, or Motor Vehicle offices.

Citizens who are registering for the first time in Colorado must be living in Colorado for 22 days immediately before the election in which the individual intends to vote and must provide a valid Colorado driver's license or Colorado identification card. Identification requirements for first time voters can be found by going to the Secretary of State's website and clicking on the words "Acceptable forms of ID."  

For questions relating to voter registration or registration status, visit Secretary of State's website, contact the Adams County Election Office at 720-523-6500, or the City Clerk's Office at 303-538-7230.

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