The mechanisms are in place for Colorado to have an open primary next year and a presidential primary in 2020. Colorado Gov. John Hickenlooper on Thursday signed into law Senate Bill 305, giving direction to county clerks on how to conduct the elections that are new or revived in this state. Up until now, primary elections have been restricted to registered members of political parties, and Colorado has been in the minority of states that chooses its presidential party nominees via a caucus system where residents must be registered with the party and attend meetings.
In November, however, statewide voters approved Propositions 107 and 108. Proposition 107 allows unaffiliated voters to cast ballots in either Republican or Democratic general primaries, and Proposition 108 replaces the sometimes overcrowded and unwieldy caucuses with a presidential primary.