Every person who is seventeen (17) years of age on the date of a primary election or presidential primary election and who will be eighteen years of age on the date of the next general election is entitled to vote in the primary election or presidential primary election.
Voters affiliated with a major party may cast a ballot for candidates of the party they are affiliated with.
Unaffiliated voters may cast a ballot for any one political party. If an unaffiliated voter returns a ballot with more than one political party, the ballot will be rejected and none of the votes will be counted. Unaffiliated voters have three options available to them:
- If you would rather receive a packet containing the ballots of all participating major parties, you can take no action or select this option when first registering to vote.
- You can also appear in person at any Voter Service and Polling Center in your county and choose the party's ballot you want to vote.
- You may choose which party's ballot you want to get in the mail for the next primary election by selecting a party preference at govotecolorado.gov or on any paper voter registration form.
NOTE: Selecting a party preference doesn’t change your unaffiliated status and does not indicate that you are joining that party. However, the primary that you vote in will be a public record (but not how you voted).
NOTE: A ballot preference selection is good for only one election. So, if you select a ballot preference before the June 2018 primary, that preference will be removed before the next primary in 2020.