2018 Precinct Caucus Information

The Boulder County Clerk and Recorder’s Office does not conduct the precinct caucuses nor the delegate selection process. The caucuses are conducted by the political parties.

The following is information provided solely as a public service. Please contact your local political party (Democratic Party) (Republican Party) for additional information and please see the Secretary of State Caucuses, Assemblies and Conventions FAQs for more information on the process.

What is a precinct caucus?

In each even-numbered year, the major political parties in Colorado (Democratic Party and Republican Party) hold their precinct caucuses on the first Tuesday in March. A precinct caucus is a neighborhood meeting conducted by the political parties, where affiliated voters may get involved in selecting delegates for their party’s County and State Assemblies. This is an important step in the democratic process, because the delegates will eventually elect county, state, and congressional candidates to appear on the party’s June 26 Primary Election ballot, and also approve a party platform for 2018. Precinct caucuses are open to the public and held throughout the state.

I thought there was a law change regarding caucuses and primary elections. What has changed?

There is still a primary election in June. Unaffiliated voters can now vote in a primary election without changing their affiliation status. If you are an unaffiliated voter, you can either declare a ballot preference on your voter registration record or you will be sent ballots for all parties conducting a primary election. However, you can only vote and return one party’s ballot. If you vote and return multiple ballots, none of your votes will be counted.

Caucus is a completely separate activity and process and voters still need to be affiliated with the party to participate. In 2020, there will also still be a regular caucus process, but the presidential candidate will be voted on in a primary election (also open to unaffiliated voters).

Who may participate in caucus and what are the deadlines?

To vote in a precinct caucus an elector must be:

  • Affiliation Deadline: Registered to vote and affiliated with the party no later than January 8, 2018
  • Residential Address Deadline: If you have moved, you must have updated your residential address no later than February 5, 2018

Exception: If you turn 18 or become a U.S. citizen during the two-month period prior to the caucuses AND register to vote prior to the day of the caucuses, you may participate in the caucuses of the party you affiliated with when you registered.

When do the 2018 caucuses take place?

This year’s party caucuses were held on Tuesday, March 6, 2018.

How do I find out where my party’s caucus is?

Please contact your political party for information on local precinct caucus locations:

How do I know what precinct I am in?

You can find your precinct number, by looking up your registration at or by calling our office at 303-413-7740.

I am registered with the: American Constitution, Green, Libertarian, or Unity Party. Are they having a caucus or similar gathering?

These parties are minor parties in Colorado. They may be hosting party meetings or conventions. Please see the applicable party website for details:

Contact Us

Elections Division


303-413-7728 (Fax)


Hours: 8 a.m. – 4:30 p.m. M-F


Boulder: 1750 33rd Street
Map & Directions

Longmont: 529 Coffman Street
Map & Directions

Lafayette: 1376 Miners Drive
Map & Directions

Mailing Address

1750 33rd Street, Suite 200
Boulder, CO 80301