How to vote for Bernie Sanders in Colorado

Colorado has semi-closed primaries

Coloradans must register as democrat or unaffiliated to vote for Bernie!

Register By

February 24 (2020)

Same-Day Registration Colorado has Same-Day Registration on March 3

Not a democrat? Colorado has a special deadline for changing affiliation: Mon, February 3

Primary On

March 3 (2020)

Colorado Primary: Tue, March 3

It's still very early in the election season, and dates often change. Please sign up below for Voter Alerts in Colorado and we'll send you an email if the dates change!

Colorado Voter Information

Get Registered

Colorado has semi-closed primaries — Coloradans must register as democrat or unaffiliated to vote for Bernie!

Register as a democrat or undeclared now!

In Colorado, you must be affiliated as a democrat by Mon, February 3, which is before the registration deadline!

Colorado has Same-Day Registration which allows you to register to vote at the primaries on Tue, March 3

Not sure if you are registered, or what you're registered as? Check your current registration status online.


To vote in the Colorado Primary you must meet the following criteria:

  • are a United States citizen,
  • be 18 years of age or older by March 1st,
  • affiliated with the Democratic party by February 3th, 2020
  • have resided in Colorado 22 days immediately before the election at which you intend to vote,
  • are not serving a sentence of confinement, detention, or parole for a felony conviction.

College Students

If you are a college student not living in your home state, you can vote for Bernie in either your home state or in the state in which you are attending school!

Military/Overseas Voters

If you are a Military Voter or a US Citizen living abroad, you are able to request a ballot here to vote for Bernie.

More Information

If you have any questions about voting in Colorado you may contact your state official elections office or Democratic party.

Find local Bernie supporters and get help from /r/Colorado4Sanders

Will you help Bernie win?

"I've said it since day one: I can't do it alone." - Bernie Sanders

This grassroots campaign depends on grassroots supporters like you! Sign up as a volunteer with the official campaign to find opportunities to help the campaign directly.

Bernie wants 1,000,000 volunteers, and it's up to us to make that happen.

Volunteer for Bernie

Bernie continues to fund his campaign from small donations from people like us. Show your support by donating to the campaign!

Donate to the Bernie Sanders Campaign