A general election was held in the U.S. state of Colorado on November 6, 2018. All of Colorado's executive officers were up for election as well as all of Colorado's seven seats in the United States House of Representatives. The Democrats swept all of the statewide offices.
Incumbent Democratic Governor John Hickenlooper was term-limited. Incumbent Democratic Lieutenant Governor Donna Lynne ran for governor, but was eliminated in the Democratic primary on June 26, 2018.
Incumbent Republican attorney general Cynthia Coffman ran for governor, but was eliminated at the state Republican party convention in April.
Incumbent Republican Secretary of State Wayne Williams was eligible to run for re-election to a second term.
Incumbent Republican state treasurer Walker Stapleton was term-limited and could not run for a third consecutive term in office. He was the unsuccessful Republican nominee for Governor of Colorado.
Two seats on the seven-member State Board of Education were up for election in 2018. These included the 2nd district seat currently held by Democrat Angelika Schroeder and the 4th district seat held by Republican Pam Mazanec.