General Election & Voter Registration Information
Regular Municipal Elections are held on the first Tuesday in November in odd-numbered years. The 2023 Municipal Election will be held on Tuesday, November 7th.
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 (2023 and 2027).
The City Clerk’s office is responsible for conducting the Municipal Elections, as well as assisting Adams County with registering citizens to vote.
Voters in City elections are registered electors who live within the Thornton City limits. For those who are not already registered to vote, they may register for the November 2023 Regular Municipal Election, in one of the following ways:
If an individual registers to vote by mail, a voter registration agency (including the Thornton City Clerk's Office), a local driver's license facility, or online through
October 30 and the Adams County Clerk and Recorder will automatically mail a ballot.
Voter registration forms are available at several locations including the Adams County Election Office, any City Clerk's Office, Motor Vehicle offices, or
If an individual registers to vote through a voter registration drive, their application must be submitted no later than
Individuals may also register to vote by appearing in-person at a Voter Service and Polling Center through and including Election Day.
October 30, individuals
must visit one of the Voter Service and Polling Centers in Adams County to register and receive a ballot. Go to
www.adamsvotes.com for locations.
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 (October 16, 2023, for the 2023 Election) and provide a valid Colorado driver's license or Colorado identification card. Identification requirements for first time voters can be found by going to
and clicking on the words "Acceptable forms of ID."
For questions relating to voter registration or registration status, visit
www.govotecolorado.gov, contact the Adams County Election Office at 720-523-6500, or the City Clerk's Office at 303-538-7230.
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