Hand inserting a piece of paper into a ballot box in front of the Colorado flag.

Colorado Presidential Primary ballots being mailed this week 

© iStock - Niyazz

County clerks across the state of Colorado will be mailing out ballot packets for the March 3rd Presidential Primary beginning Monday February 10, 2020.  Clerks have until this Friday, February 14, 2020, to mail ballots to registered voters.

“This is Colorado’s first Presidential Primary in 20 years, and the state's first Presidential Primary ever in which unaffiliated voters can participate,” said Colorado Secretary of State Jena Griswold.

Registered Republican and Democratic voters will receive the ballot of their party.  Unaffiliated voters will receive both party’s ballots, unless they chose a party before the February 3rd deadline, but are only to vote and send back one.  Voters who do not receive a ballot by February 19, 2020 should contact their county clerk. 

Voters will also have the opportunity to vote in person beginning on February 24, 2020 and continuing through Election Day on March 3, 2020 until 7:00 p.m.  

Colorado also offers same-day voter registration, allowing eligible Coloradans to register and vote on Election Day.  

Colorado is one of 14 states holding primaries on Super Tuesday, meaning Coloradans will have a significant role in deciding who will run for president in the General Election on November 3, 2020.   

This is also the first year that 17-year-olds will be able to participate in Colorado’s two primaries, the Presidential and the State Primary taking place June 30, 2020, provided they turn 18 by the General Election on November 3, 2020.  Colorado is one of just 17 states that allow this added level of accessibility. 

In 2016, Colorado voters overwhelmingly approved Proposition 107, which restored primary elections in Colorado in presidential election years. The state was previously using the caucus system.

Coloradans can update and verify voter registration, register to vote online, or find their Voting Services Polling Center at