2020 Colorado House of Representatives election

The 2020 Colorado House of Representatives elections took place on November 3, 2020, with the primary elections held on June 30, 2020. Voters in all 65 districts of the state House elected their representative for a two-year term. It coincided with the state Senate elections and the biennial United States elections. The Democratic Party retained control of the House of Representatives. The Democrats gained the 38th District while the Republicans gained the 47th District, resulting in no net seat change.

Background
In the previous state House election (2018), the Democrats increased their majority to 17 seats, gaining 5 seats, while the Republicans lost 5 seats. Therefore, for Democrats to have lost their absolute majority in the House in this election, Republicans and other parties would have needed to gain at least 9 more seats.

Term-limited incumbents
Four Democratic and five Republican incumbents are term-limited and prohibited from seeking a consecutive fifth term.
 * KC Becker (D), District 13
 * Perry Buck (R), District 49
 * Stephen Humphrey (R), District 48
 * Tracy Kraft-Tharp (D), District 29
 * Lois Landgraf (R), District 21
 * Jovan Melton (D), District 41
 * Lori Saine (R), District 63
 * Jonathan Singer (D), District 11
 * James Wilson (R), District 60

Retiring incumbents

 * Janet Buckner (D), District 40 (running for State Senate)
 * James Coleman (D), District 7 (running for State Senate)
 * Sonya Jaquez Lewis (D), District 12 (running for State Senate)
 * Larry Liston (R), District 16 (running for State Senate)

Results
Bold - Gain

Italicize - Hold, new member

Closest races
Seats where the margin of victory was under 10%:
 * 1) District 27, 3.11%
 * 2) District 25, 5.64%
 * 3) District 43, 5.72%
 * 4) District 22, 5.73%
 * 5) District 47, 9.18% gain