The advocacy group is close to landing five candidates on the November ballot, one for the State Senate and the rest for the State House.
As for how many voters incorrectly sent back both ballots, the amount was comparable to other open primary states.
Up to 7 percent of unaffiliated voters are returning both the Republican and Democratic ballots.
Most experts agree Colorado’s current congressional map doesn’t advantage a single party. Advocates want to keep it that way.
The open primary model adopted by voters in 2016 allows unaffiliated voters to cast a ballot in June's primary elections without joining a party.
The GOP's governing central committee will vote Saturday whether to cancel its primary next June and limit selection of candidates to members of the party.
Democratic Party Chair Morgan Carroll on the impact of the state's new open primary, a crowded gubernatorial field and the need to break free of the old party structure.