Colorado's 4th congressional district is a congressional district in the U.S. state of Colorado. Located in the eastern part of the state, the district encompasses most of the rural Eastern Plains, as well as portions of the Colorado Front Range, including Loveland, Highlands Ranch, Castle Rock, and Parker.
The district is currently represented by Republican Lauren Boebert. With a Cook Partisan Voting Index rating of R+9, it is the most Republican district in Colorado. It is also the wealthiest congressional district in the state of Colorado.
History
1990s Following the 1990 U.S. census and associated realignment of Colorado congressional districts, the 4th congressional district consisted of Baca, Bent, Cheyenne, Crowley, Elbert, Kiowa, Kit Carson, Larimer, Las Animas, Lincoln, Logan, Morgan, Otero, Phillips, Prowers, Sedgwick, Washington, Weld and Yuma counties, as well as portions of Adams and Arapahoe counties.
2000s Following the 2000 U.S. census and associated realignment of Colorado congressional districts, the 4th congressional district consisted of Baca, Bent, Cheyenne, Crowley, Kiowa, Kit Carson, Larimer, Lincoln, Logan, Morgan, Phillips, Prowers, Sedgwick, Washington, Weld and Yuma counties, as well as portions of Boulder, and Otero counties.
2010s Following the 2010 U.S. census and associated realignment of Colorado congressional districts, the 4th congressional district consisted of Baca, Bent, Cheyenne, Crowley, Elbert, Kiowa, Kit Carson, Las Animas, Lincoln, Logan, Morgan, Otero, Phillips, Prowers, Sedgwick, Washington, Weld and Yuma counties. The district also includes portions of Adams, Arapahoe, Boulder and Douglas counties and very little portions of Larimer County.
Characteristics This district consists mainly of the area of Colorado that is part of the Great Plains region of the United States. It is largely rural. The only large populated places in the district are Loveland, Highlands Ranch, Castle Rock, and Parker. Until the 2010s redistricting, Fort Collins was the largest city in the district and provided a large Democratic base, making the district somewhat competitive: before the 2020 redistricting, Greeley was the largest city in the district but has since been moved to the 8th district.
While the 4th takes in some suburbs of the Democratic-leaning Denver metropolitan area, the 4th takes in Douglas County, the most Republican region in the area. However, it is still far more friendly to the Democrats than the other counties in the district (especially in blue-leaning Highlands Ranch and Lone Tree) and is the only area in the district with any Democratic support of real significance. On the other hand, the district takes in some of the most Republican counties in Colorado, such as Washington, Kit Carson, and Logan, where Democrats rarely exceed even 20 percent of the vote.
Historically, the district has been Republican-leaning, though Marilyn Musgrave won relatively narrow victories in 2004 and 2006 due to her Democratic opponents' strength in Fort Collins. Musgrave had to rely on strong performances in more conservative Greeley to hold onto her seat. In 2008, Musgrave lost reelection to Betsy Markey, who became the first Democrat to represent the district since the early 1970s. Markey was defeated in 2010 by Republican Cory Gardner, and the district was made more Republican in redistricting due to the removal of Fort Collins.
George W. Bush received 58% of the vote in this district in 2004. John McCain narrowly carried the district in 2008 with 50% of the vote.
The current incumbent, Republican Lauren Boebert, was elected to the seat on November 5, 2024, having previously represented Colorado's 3rd Congressional District. Boebert defeated Democratic nominee and former AFL-CIO speechwriter Trisha Calvarese.
Composition For the 118th and successive Congresses (based on redistricting following the 2020 census), the district contains all or portions of the following counties and communities:https://www2.census.gov/geo/maps/cong_dist/cd118/cd_based/ST08/CD118_CO04.pdf
Adams County (3)
Bennett, Strasburg (shared with Arapahoe County), Watkins (shared with Arapahoe County)
Arapahoe County (7)
Brick Center, Byers, Comanche Creek, Deer Trail, Peoria, Strasburg (shared with Adams County), Watkins (shared with Adams County)
Baca County (6)
All 6 communities
Bent County (3)
All 3 communities
Cheyenne County (3)
All 3 communities
Crowley County (4)
All 4 communities
Douglas County (22)
Acres Green, Castle Pines, Castle Pines Village, Castle Rock, Franktown, Grand View Estates, Highlands Ranch, Larkspur, Lone Tree, Louviers, Meridian, Meridian Village, Parker, Perry Park, Roxborough Park, Sedalia, Sierra Ridge, Stepping Stone, Sterling Ranch, Stonegate, The Pinery, Westcreek
Elbert County (6)
All 6 communities
El Paso County (2)
Calhan, Ramah
Kiowa County (5)
All 5 communities
Kit Carson County (6)
All 6 communities
Larimer County (3)
Loveland, Wellington, Windsor (shared with Weld County)
Lincoln County (4)
All 4 communities
Lincoln County (4)
All 4 communities
Logan County (8)
All 8 communities
Morgan County (13)
All 13 communities
Phillips County (4)
All 4 communities
Prowers County (5)
All 5 communities
Sedgwick County (3)
All 3 communities
Washington County (3)
All 3 communities
Weld County (11)
Ault, Briggsdale, Eaton, Grover, Hudson, Keenesburg, Nunn, Pierce, Raymer, Severance, Windsor (shared Larimer County)
Recent election results from statewide races Year Office Results2008 PresidentMcCain 59% - 39% SenateSchaffer 57% - 38%2010 SenateBuck 60% - 34% Secretary of StateGessler 64% - 28% TreasurerStapleton 65% - 35% Attorney GeneralSuthers 71% - 29%2012 PresidentRomney 64% - 36%2014 SenateGardner 59% - 36%2016 PresidentTrump 60% - 32% SenateGlenn 60% - 35%2018 GovernorStapleton 60% - 36% Attorney GeneralBrauchler 63% - 34%2020 PresidentTrump 58% - 39% SenateGardner 61% - 37%2022 SenateO'Dea 57% - 40% GovernorGanahl 55% - 42% Secretary of StateAnderson 58% - 39% TreasurerSias 59% - 38% Attorney GeneralKellner 60% - 38%2024 PresidentTrump 58% - 40%
List of members representing the district Member Party Term duration Congress(es) Electoral history District location District created March 4, 1915 Edward T. Taylor Democratic March 4, 1915 –September 3, 1941 Redistricted from the and re-elected in 1914.Re-elected in 1916.Re-elected in 1918.Re-elected in 1920.Re-elected in 1922.Re-elected in 1924.Re-elected in 1926.Re-elected in 1928.Re-elected in 1930.Re-elected in 1932.Re-elected in 1934.Re-elected in 1936.Re-elected in 1938.Re-elected in 1940.Died. Vacant September 3, 1941 –December 9, 1941 Robert F. Rockwell Republican December 9, 1941 –January 3, 1949 Elected to finish Taylor's term.Re-elected in 1942.Re-elected in 1944.Re-elected in 1946.Lost re-election. Wayne N. Aspinall Democratic January 3, 1949 –January 3, 1973 Elected in 1948.Re-elected in 1950.Re-elected in 1952.Re-elected in 1954.Re-elected in 1956.Re-elected in 1958.Re-elected in 1960.Re-elected in 1962.Re-elected in 1964.Re-elected in 1966.Re-elected in 1968.Re-elected in 1970.Lost renomination. James Paul Johnson Republican January 3, 1973 –January 3, 1981 Elected in 1972.Re-elected in 1974.Re-elected in 1976.Re-elected in 1978.Retired. Hank Brown Republican January 3, 1981 –January 3, 1991 Elected in 1980.Re-elected in 1982.Re-elected in 1984.Re-elected in 1986.Re-elected in 1988.Retired to run for U.S. Senator. Wayne Allard Republican January 3, 1991 –January 3, 1997 Elected in 1990.Re-elected in 1992.Re-elected in 1994.Retired to run for U.S. Senator. Bob Schaffer Republican January 3, 1997 –January 3, 2003 Elected in 1996.Re-elected in 1998.Re-elected in 2000.Retired. Marilyn Musgrave Republican January 3, 2003 –January 3, 2009 Elected in 2002.Re-elected in 2004.Re-elected in 2006.Lost re-election. 2003–2013 Betsy Markey Democratic January 3, 2009 –January 3, 2011 Elected in 2008.Lost re-election. Cory Gardner Republican January 3, 2011 –January 3, 2015 Elected in 2010.Re-elected in 2012.Retired to run for U.S. Senator. 2013–2023 Ken Buck Republican January 3, 2015 –March 22, 2024 Elected in 2014.Re-elected in 2016.Re-elected in 2018.Re-elected in 2020.Re-elected in 2022.Resigned. 2023–present Vacant March 22, 2024 –July 8, 2024 Greg Lopez Republican July 8, 2024 –January 3, 2025 Elected to finish Buck's term.Retired. Lauren Boebert Republican January 3, 2025 –present Moved from the and re-elected in 2024.
Election results 1914 1916 1918 1920 1922 1924 1926 1928 1930 1932 1934 1936 1938 1940 1941 (special) 1942 1944 1946 1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 (special) 2024
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2024
Historical district boundaries
See also
Colorado's congressional districts List of United States congressional districts
References
Congressional Biographical Directory of the United States 1774–present
External links Interactive map of Colorado's 4th Congressional District