The 2018 Colorado Attorney General election took place on November 6, 2018, to elect the attorney general of Colorado.
Incumbent Republican Cynthia Coffman did not run for re-election, instead opting to run for governor. The Democratic Party nominated Phil Weiser, who subsequently defeated Republican nominee George Brauchler in the general election.
Republican primary
Arapahoe County District Attorney George Brauchler won the Republican nomination unopposed.
Democratic primary
The Democratic primary was contested between Phil Weiser, former dean of the University of Colorado Law School, and Joe Salazar, a state representative. Prior to the primary, outgoing John Hickenlooper took the "extraordinary move" of publicly endorsing Weiser. Salazar's campaign had received support from democratic socialist U.S. Senator Bernie Sanders and left-wing organization Our Revolution.
Convention results
Weiser and Salazar qualified for the Democratic primary ballot. Attorney Amy Padden did not qualify.
Primary results
Weiser defeated Salazar by a 50.43% to 49.57% margin.
Libertarian nomination
Attorney William F. Robinson, III was the Libertarian nominee.
General election
Weiser won the general election by a 6.5% margin of victory.