Primary voting info - Please read!

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Presidential Primary Information

Hello Boulder County Voters:


Dog in No Party had representing unaffiliated voters

Colorado will hold its first Presidential Primary Election in two decades on March 3, 2020 – Super Tuesday! Ballots for the Presidential Primary are mailed beginning February 10. Watch this fun 60-second video about the primary or check out what you need to know to particpate below.


Watch video button

The Presidential Primary:
What you need to know!


  • Presidential primaries in Colorado are only held by the Democratic and Republican Parties. You must be registered as a Democrat, Republican, or Unaffiliated to participate. (Unsure how you are registered? Check now!)
  • Registered Democrats will receive only the Democratic Party ballot. Registered Republicans will receive only the Republican Party ballot.
  • Unaffiliated voters will be mailed both party ballots but can only vote and return one. Up until February 3, unaffiliated voters can also pre-pick their ballot preference, if they wish, by updating their voter registration online.
  • February 3 is the last day for voters who are already registered with a political party to change their affiliation if they wish to vote in a different party’s primary election.
  • ***NEW*** 17-year-olds who will turn 18-years-old by the General Election, November 3, 2020 – Can now VOTE in Primaries!
  • Colorado does not have a registration deadline. You can register up to and including Election Day (new registrants, change of address, etc.). But, Feb 3 is the deadline if you want to change party affiliation.


Donuts & Democracy

Elections Presentation in Longmont


The Boulder County Clerk and Recorder is hosting a community presentation on everything you need to know about the upcoming 3 elections: Presidential Primary, June 30 Primary, and the November General Election.

Learn about what happens behind the scenes to ensure an efficient, accurate, and secure election. The presentation includes info on the next three elections, ballot processing, voter statistics, election security, and more. 

PLUS - Feb 8 is the museum free day, so you can stay and check out the art after!

Donuts & coffee will be served. Space is limited! RSVP to ensure a donut today.


Longmont Museum – Saturday, February – 10:30 a.m. – 400 Quail Rd, Longmont, Colorado 80501


The presentation and Q&A is expected to last about one hour.


Presentation RSVP button

Have you moved recently?


If you have moved since the last election, you should check your voter registration and make sure your mailing address is correct. 

Important Dates:

Feb 3:

  • Last day for voters who are affiliated with a political party to change or withdraw their affiliation if they wish to vote in a different party’s primary election for the March 3 Presidential Primary Election.


  • (Optional only) Last day for Unaffiliated voters to specify in their voter registration a ballot preference. Otherwise, they will receive both party ballots, but can only vote and return one.

Feb 8

  • Donuts & Democracy - an Elections presentation (see main content for details & RSVP link)


Feb 10

  • Ballots mailed to Democratic, Republican, and Unaffiliated voters.


  • All 24-Hour Ballot Drop-off Boxes open


Feb 24


  • Voter Service and Polling Centers open.


  • Last day to register and still be sent a ballot in the mail. 


Feb 27

  • Election open house 12 p.m. - 1:30 p.m. (RSVP)


Feb 28

  • Drive-by Ballot Drop-off locations open.


March 2

  • Election open house 4:30 p.m. - 6 p.m. (RSVP)


March 3
Presidential Primary Election Day


  • Ballot drop-off and voting services available 7 a.m. to 7 p.m. Ballots must be received by 7 p.m. to be counted.  

Why am I getting this email? You are receiving this correspondence because you provided your email to the Colorado Secretary of State when you registered to vote or your signed up to receive Boulder County Voter & Election Information. The Boulder County Elections Division will not be sending emails on a regular basis. We intend to only send important voting information during the election period.