Important Updates:

Get the latest coronavirus updates, including information on closures and work the city is doing to limit the spread of the virus. | More Info


The City of Boulder welcomes your feedback. Use our Inquire Boulder customer service tool to tell us what’s on your mind.

  • Channel 8
  • My City News
  • Facebook
  • Public Saftey

How to Participate in Colorado’s 2020 Presidential Primary

On March 3 – commonly known as Super Tuesday – Colorado will hold its first presidential primary election in two decades.

In an effort to be more inclusive, Colorado passed a bill in 2016 that allows
unaffiliated and young voters to vote in the presidential primary.


Here is what you need to know:

Colorado political parties will still hold caucuses in March to determine local and statewide candidates for the ballot in the June primary.

Ballots for the presidential primary were mailed to voters beginning Feb. 10.

Presidential primaries in Colorado are only held by the Democratic and Republican parties. You must be registered as a Democrat, Republicanor unaffiliated to participate.

Voters registered to a party will only receive the ballot for their respective party. Unaffiliated voters will be mailed both party ballots but can only vote on and return one.

Unaffiliated voters could update their voter registration to pre-designate their ballot preference, which would eliminate getting two ballots in the mail, but the deadline to switch parties and receive only one ballot in the mail was Feb. 3.

Turning 18 soon? Voters who will turn 18-years-old by the general election on Nov. 3 can now vote in Colorado primaries.


Voter registration

There is no voter registration deadline. You can register and vote up to and including Election Day. If
you have a Colorado driver’s license or state ID, you can register to vote or update your registration online at You can also register by mail or in-person at any Boulder County Clerk & Recorder’s office.

For more voter and election information, visit or call 303-413-7740.