Colorado has a hybrid primary system. If you are registered to with a particular party, you must vote in that parties primary. However, if you are unaffiliated with any political party, you can choose which party’s primary you wish to vote in.
Unaffiliated voters will receive both parties ballots in the mail but must return just one party’s ballot. Or, if voting in person, unaffiliated voters must choose which party’s ballot they want to vote at the polls.
If you have any questions about your state’s primary election, please contact your local election officials.