2018 United States House of Representatives elections in Colorado

The 2018 United States House of Representatives elections in Colorado were held on November 6, 2018, to elect the seven U.S. representatives from the state of Colorado, one from each of the state's seven congressional districts. The Republican and Democratic Party primaries in Colorado were held on June 26, 2018. The elections coincided with the gubernatorial election, as well as other elections to the House of Representatives, elections to the United States Senate, and various state and local elections.

By district
Results of the 2018 United States House of Representatives elections in Colorado by district:

District 1
The 1st district is located in Central Colorado and includes most of the city of Denver. Incumbent Democrat Diana DeGette, who had represented the district since 1997, ran for re-election. He was re-elected with 68% of the vote in 2016. The district had a PVI of D+21.

Nominee

 * Diana DeGette, incumbent U.S. Representative

Eliminated in primary

 * Saira Rao, political activist, author, publisher, former Wall Street lawyer and television producer

Eliminated at Convention

 * David Sedbrook, self-employed travel industry worker (endorsed DeGette)

Nominee

 * Casper Stockham, Uber driver and nominee for this seat in 2016

Withdrawn

 * John Field
 * Jeremiah Vialpando

Nominee

 * Raymon Doane, tax examiner

District 2
The 2nd district is located in Northern Colorado and encompasses seven counties. Incumbent Democrat Jared Polis, who had represented the district since 2009, did not run re-election, instead running for Governor. He was re-elected with 57% of the vote in 2016. The district had a PVI of D+9.

Nominee

 * Joe Neguse, former regent for the University of Colorado, former executive director of the Colorado Department of Regulatory Agencies, and nominee for Secretary of State of Colorado in 2014

Eliminated in primary

 * Mark Williams, businessman and former chair of the Boulder County Democratic Party

Withdrawn

 * Kristopher Larsen, Mayor of Nederland
 * Howard Dotson, pastor and candidate for Loveland City Council in 2017
 * Kenneth Toltz, businessman and nominee for the 6th district in 2000

Declined

 * Kerry Donovan, state senator for the 5th District (running for re-election)
 * Steve Fenberg, state senator
 * Dan Gibbs, Summit County Commissioner and former state senator
 * Elise Jones, Boulder County Commissioner
 * Betsy Markey, former U.S. Representative and nominee for state treasurer in 2014
 * Shaun McGrath, former mayor of Boulder
 * Shannon Watts, founder of Moms Demand Action

Nominee

 * Peter Yu, businessman

Nominee

 * Roger Barris

Withdrawn

 * Todd Mitchem

Candidates

 * Nick Thomas

District 3
The 3rd district is located in Western and Southern Colorado and includes a large number of sparsely populated counties and the city of Grand Junction. Incumbent Republican Scott Tipton, who had represented the district since 2011, ran for re-election. He was re-elected with 55% of the vote in 2016. The district had a PVI of R+6.

Nominee

 * Scott Tipton, incumbent U.S. Representative

Democratic primary
This was one of 80 Republican-held House districts targeted by the Democratic Congressional Campaign Committee in 2018.

Nominee

 * Diane Mitsch Bush, former state representative

Eliminated in primary

 * Karl Hanlon, Glenwood Springs city attorney
 * Arn Menconi, former Eagle County commissioner

Withdrawn

 * Chris Kennedy, Grand Junction city councilman

Declined

 * Kerry Donovan, state senator for the 5th District (running for re-election)

District 4
The 4th district is located in Eastern Colorado and includes numerous sparsely populated counties. Incumbent Republican Ken Buck, who had represented the district since 2015, ran for re-election. He was re-elected with 64% of the vote in 2016. The district had a PVI of R+13.

Nominee

 * Ken Buck, incumbent U.S. Representative

Eliminated at convention

 * Jim Gunning, former mayor of Lone Tree

Nominee

 * Karen McCormick, veterinarian

Eliminated in primary

 * Chase Kohne, veteran, veterinarian and small business owner

Eliminated at Convention

 * Larry Germanson
 * Richard Weil

Results
[[File:2018 CO-4 Democratic primary results.svg|thumb|200px|Primary results by county: {{legend|#8db8e2|McCormick}}

{{legend|#8db8e2|50–60%}}

{{legend|#679fd7|60–70%}}

{{legend|#4187cd|70–80%}} ]]

District 5
The 5th district is located in Central Colorado and includes Fremont, El Paso, Teller and Chaffee counties and the city of Colorado Springs. Incumbent Republican Doug Lamborn, who had represented the district since 2007, ran for re-election. He was re-elected with 62% of the vote in 2016. The district had a PVI of R+14.

Nominee

 * Doug Lamborn, incumbent U.S. Representative

Eliminated in primary

 * Darryl Glenn, El Paso County Commissioner and nominee for the U.S. Senate in 2016
 * Owen Hill, state senator
 * Bill Rhea, retired Texas judge
 * Tyler Stevens, former Green Mountain Falls Mayor

Withdrawn

 * Tom Strand, Colorado Springs City Council member

Polling
{| class=wikitable ! Poll source ! Date(s) administered ! Sample size ! Margin of error ! style="width:75px;"|Darryl Glenn ! style="width:75px;"|Owen Hill ! style="width:75px;"|Doug Lamborn ! style="width:75px;"|Bill Rhea ! style="width:75px;"|Tyler Stevens ! style="width:75px;"|Undecided
 * Magellan Strategies
 * align=center| May 20–21, 2018
 * align=center| 519
 * align=center| ± 4.3%
 * align=center| 27%
 * align=center| 10%
 * align=center| 37%
 * align=center| 2%
 * align=center| 3%
 * align=center| 21%
 * align=center| 21%

Nominee

 * Stephany Rose Spaulding, activist, public commentator, pastor of Ebenezer Baptist Church in Colorado Springs and associate professor of Women's and Ethnic Studies at the University of Colorado Colorado Springs

Eliminated in primary

 * Marcus Murphy (write-in)

Eliminated at Convention

 * Betty Field, social worker and former executive director for the Black Hills Center for Equality
 * Lori Furstenberg
 * Kimberly Sugarmen

Nominee

 * Douglas Randall

District 6
The 6th district is located in Central Colorado and surrounds the city of Denver from the east, including the city of Aurora. Incumbent Republican Mike Coffman, who had represented the district since 2009, ran for re-election. He was re-elected with 51% of the vote in 2016. The district had a PVI of D+2.

Nominee

 * Mike Coffman, incumbent U.S. Representative

Democratic primary
This was one of 80 Republican-held House districts targeted by the Democratic Congressional Campaign Committee in 2018.

Nominee

 * Jason Crow, attorney

Eliminated in primary

 * Levi Tillemann, businessman

Withdrawn

 * David Aarestad, attorney and former candidate for the Cherry Creek School District
 * Gabriel McArthur, Bernie Sanders delegate to the 2016 Democratic National Convention (endorsed Tillemann)

District 7
The 7th district is located in Central Colorado, to the north and west of Denver and includes the cities of Thornton and Westminster and most of Lakewood. Incumbent Democrat Ed Perlmutter, who had represented the district since 2007, ran for re-election. He was re-elected with 55% of the vote in 2016. The district had a PVI of D+6.

Democratic primary
Perlmutter announced a run for governor, but later withdrew from that race. He later announced that he would not run for re-election. However, on August 21, 2017, he announced that he had changed his mind.

Nominee

 * Ed Perlmutter, incumbent U.S. Representative

Withdrawn

 * Daniel Baer, former U.S. ambassador to the Organization for Security and Co-operation in Europe
 * Andy Kerr, state senator
 * Dominick Moreno, state senator
 * Brittany Pettersen, state representative

Republican primary
Colorado's 7th district was included on the initial list of Democratic-held seats being targeted by the National Republican Congressional Committee in 2018.

Nominee

 * Mark Barrington, Lakewood businessman

Declined

 * Don Ytterberg, former chair of the Jefferson County Republican Party, former vice chair of the Colorado Republican Party and nominee for this seat in 2014

Candidates

 * Nathan Clay