The total number of registered and pre-registered voters in Colorado by party affiliation since unaffiliated voters could begin voting in primary elections in 2018. Includes active, inactive and pre-registered voters.
A graph showing voter registration totals from November 2018 to the present. Unaffiliated voters have grown from about 1.5 million registrations to 2.3 million. Democratic registrations have gone from 1.2 million to 1.1 million. Republican registrations have gone from 1.15 million to 1 million.