US House of Representatives · District 4 · Colorado · 2026

Who is running

Lauren BoebertRepublican PartyUS House of Representatives · District 4
Raised
$1.2M
Cash on hand
$274K
In Congress since
2021
Votes attended
95.9%
See full profile →
Eileen LaubacherDemocratic PartyUS House of Representatives · District 4
Raised
$13.7M
Cash on hand
$1.8M
See full profile →
Douglas MangerisLibertarian PartyUS House of Representatives · District 4
On file
Official ballot listing
See full profile →

Certified by Colorado Secretary of State, as of Oct 15, 2026. Official list

Names and parties are copied exactly from the official list. Blue marks Democrats, red marks Republicans, and gray marks every other party or none; each is also labeled in words.

Worth knowing

The party winning this district last changed in 2010, when Cory Gardner (Republican) won it after a Democratic win in 2008. Source: Federal Election Commission, Federal Elections and Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election and MIT Election Data and Science Lab, U.S. House of Representatives 1976-2024 (compiled from the Clerk of the House)
The closest result we hold for this district was in 1952: Wayne N. Aspinall won by 29 votes, 0.0 points of all votes counted. Source: Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election
12 different people won the 53 regular elections for this district from 1920 to 2024. Source: Federal Election Commission, Federal Elections and Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election and MIT Election Data and Science Lab, U.S. House of Representatives 1976-2024 (compiled from the Clerk of the House)
A candidate with the same name as the 2024 winner, Lauren Boebert, is on the 2026 official list. Source: Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election
Three candidates are on the official list for this race. Source: Official list from Colorado Secretary of State
All eight U.S. House contests in Colorado on the official list have more than one candidate. Source: Official list from Colorado Secretary of State

Each fact is worked out from the official records linked beside it. None is a prediction or a rating.

Past results

Share of the vote for this district, 1920 to 2024Percent of all votes counted in each regular general election. A gap means the party had no candidate or no count was published.

Democratic candidate
Republican candidate

District lines are redrawn after each census and sometimes in between, so the same district number did not always cover the same ground. A break in a line means no figure was published or held for that year. It does not mean zero.

Data table: Share of the vote for this district, 1920 to 2024

Share of the vote for this district, 1920 to 2024
Year	Democratic candidate	Republican candidate
1920	55.32%	44.68%
1922	64.26%	35.74%
1924	65.54%	34.46%
1926	66.75%	33.25%
1928	58.84%	41.16%
1930	66.95%	33.05%
1932	65.99%	34.01%
1934	67.3%	29.18%
1936	65.45%	34.55%
1938	63.74%	36.26%
1940	59.41%	40.59%
1942	41.25%	58.75%
1944	38.33%	61.67%
1946	41.25%	58.75%
1948	51.86%	48.14%
1950	57.3%	42.7%
1952	50.02%	49.98%
1954	53.49%	46.51%
1956	61.76%	38.24%
1958	63.61%	36.39%
1960	68.54%	31.46%
1962	58.65%	41.35%
1964	63.01%	36.99%
1966	58.61%	41.39%
1968	54.69%	45.31%
1970	55.08%	44.92%
1972	48.97%	51.03%
1974	47.95%	52.05%
1976	34.84%	54.05%
1978	38.82%	61.18%
1980	29.5%	68.42%
1982	30.24%	69.76%
1984	27.42%	71.13%
1986	30.2%	69.8%
1988	26.92%	73.08%
1990	45.95%	54.05%
1992	42.16%	57.84%
1994	27.7%	72.3%
1996	38.04%	56.14%
1998	40.66%	59.34%
2000	No figure	79.5%
2002	41.68%	54.94%
2004	44.78%	51.05%
2006	43.12%	45.61%
2008	56.2%	43.8%
2010	41.35%	52.48%
2012	36.75%	58.42%
2014	29.22%	64.67%
2016	31.65%	63.55%
2018	39.38%	60.61%
2020	36.61%	60.11%
2022	36.56%	60.94%
2024	42.04%	53.64%

Source: Federal Election Commission, Federal Elections and Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election and MIT Election Data and Science Lab, U.S. House of Representatives 1976-2024 (compiled from the Clerk of the House). As of Nov 5, 2026.

Winners and margins, 1920 to 2024

Winners and margins
Year	Most votes	Margin over the runner-up
2024	Lauren Boebert (Republican)	51,964 votes (11.6 points)
2022	Ken Buck (Republican)	86,405 votes (24.4 points)
2020	Ken Buck (Republican)	111,661 votes (23.5 points)
2018	Ken Buck (Republican)	78,494 votes (21.2 points)
2016	Ken Buck (Republican)	124,588 votes (31.9 points)
2014	Ken Buck (Republican)	101,565 votes (35.4 points)
2012	Cory Gardner (Republican)	74,206 votes (21.7 points)
2010	Cory Gardner (Republican)	29,385 votes (11.1 points)
2008	Betsy Markey (Democratic)	41,318 votes (12.4 points)
2006	Marilyn N. Musgrave (Republican)	5,984 votes (2.5 points)
2004	Marilyn N. Musgrave (Republican)	19,146 votes (6.3 points)
2002	Marilyn N. Musgrave (Republican)	27,860 votes (13.3 points)
2000	Bob Schaffer (Republican)	189,357 votes (72.0 points)
1998	Bob Schaffer (Republican)	41,345 votes (18.7 points)
1996	Bob Schaffer (Republican)	44,175 votes (18.1 points)
1994	Wayne Allard (Republican)	84,049 votes (44.6 points)
1992	Wayne Allard (Republican)	37,927 votes (15.7 points)
1990	Wayne Allard (Republican)	13,384 votes (8.1 points)
1988	Hank Brown (Republican)	98,650 votes (46.2 points)
1986	Hank Brown (Republican)	66,417 votes (39.6 points)
1984	Hank Brown (Republican)	90,007 votes (43.7 points)
1982	Hank Brown (Republican)	59,800 votes (39.5 points)
1980	Hank Brown (Republican)	101,372 votes (38.9 points)
1978	James P \"Jim\" Johnson (Republican)	37,700 votes (22.4 points)
1976	James P \"Jim\" Johnson (Republican)	42,463 votes (19.2 points)
1974	James P. (Jim) Johnson (Republican)	6,530 votes (4.1 points)
1972	James P. (Jim) Johnson (Republican)	3,843 votes (2.1 points)
1970	Wayne N. Aspinall (Democratic)	14,075 votes (10.2 points)
1968	Wayne N. Aspinall (Democratic)	15,904 votes (9.4 points)
1966	Wayne N. Aspinall (Democratic)	24,703 votes (17.2 points)
1964	Wayne N. Aspinall (Democratic)	44,068 votes (26.0 points)
1962	Wayne N. Aspinall (Democratic)	12,519 votes (17.3 points)
1960	Wayne N. Aspinall (Democratic)	31,771 votes (37.1 points)
1958	Wayne N. Aspinall (Democratic)	18,737 votes (27.2 points)
1956	Wayne N. Aspinall (Democratic)	18,463 votes (23.5 points)
1954	Wayne N. Aspinall (Democratic)	4,476 votes (7.0 points)
1952	Wayne N. Aspinall (Democratic)	29 votes (0.0 points)
1950	Wayne N. Aspinall (Democratic)	9,123 votes (14.6 points)
1948	Wayne N. Aspinall (Democratic)	2,489 votes (3.7 points)
1946	Robert F. Rockwell (Republican)	8,604 votes (17.5 points)
1944	Robert F. Rockwell (Republican)	14,632 votes (23.3 points)
1942	Robert F. Rockwell (Republican)	8,481 votes (17.5 points)
1940	Edward T. Taylor (Democratic)	13,969 votes (18.8 points)
1938	Edward T. Taylor (Democratic)	18,791 votes (27.5 points)
1936	Edward T. Taylor (Democratic)	19,835 votes (30.9 points)
1934	Edward T. Taylor (Democratic)	22,513 votes (38.1 points)
1932	Edward T. Taylor (Democratic)	19,743 votes (32.0 points)
1930	Edward T. Taylor (Democratic)	17,485 votes (33.9 points)
1928	Edward T. Taylor (Democratic)	9,053 votes (17.7 points)
1926	Edward T. Taylor (Democratic)	16,103 votes (33.5 points)
1924	Edward T. Taylor (Democratic)	15,776 votes (31.1 points)
1922	Edward T. Taylor (Democratic)	13,461 votes (28.5 points)
1920	Edward T. Taylor (Democratic)	5,003 votes (10.6 points)

See every result for this district

Map

Colorado's U.S. House districts, with District 4 outlined

This race
Another district
No figure

Outlines are the Census Bureau's simplified cartographic boundaries, drawn for display, not for legal boundaries. Group names are in the table and in each district's tooltip, not only shown by colour.

Data table: Colorado's U.S. House districts, with District 4 outlined

Colorado's U.S. House districts, with District 4 outlined
District	Contest
CO-1	Another district
CO-2	Another district
CO-3	Another district
CO-4	This race
CO-5	Another district
CO-6	Another district
CO-7	Another district
CO-8	Another district

Source: U.S. Census Bureau cartographic boundary file for the 119th Congress. As of the 119th Congress (2025 to 2027) boundary file.

The outlined district is the one in force for the 119th Congress. A state that redrew its map for 2026 may vote on different lines; the official list above names the contest.

Campaign money

Totals each campaign reported to the Federal Election Commission for 2025 to 2026
Candidate	Raised	Spent	Cash on hand	Through
Lauren Boebert	$1.2M	$1.1M	$274K	Oct 14, 2026
Eileen Laubacher	$13.7M	$11.9M	$1.8M	Oct 14, 2026

Each candidate's own reports to the Federal Election Commission, through the date shown. Candidates not listed have no FEC totals tied to them on our records. Each name links to the candidate's FEC page.

Headlines that name a candidate in this race

Lauren Boebert Trails Her Democratic Challenger in Colorado’s Most Republican District Martin Vasquez · Nov 6, 2026
Lauren Boebert loses her Colorado House seat AlterNet · Nov 5, 2026
Rep. Lauren Boebert trails Democrat Eileen Laubacher in Colorado's most Republican district The Washington Times · Nov 5, 2026
Live results: Rep. Lauren Boebert faces Eileen Laubacher in Colorado’s 4th District NewsNation · Nov 4, 2026
Lauren Boebert losing by a slim margin early Wednesdy morning Westword · Nov 4, 2026
Colorado's Senior Republican Elected to Congress, Lauren Boebert is In Studio! The Jeff and Bill Show · Nov 3, 2026
Dónde se posicionan Eileen Laubacher y la representante federal Lauren Boebert sobre los principales temas de la contienda por el 4.º Distrito Congresional de Colorado Colorado Sun · Oct 28, 2026
Lauren Boebert faces reelection test in Colorado’s 4th District University of Denver Clarion · Oct 20, 2026

Headlines are shown as each outlet published them, with a link to the outlet. A headline appears here only when it names a candidate's full name and the state, or comes from a newsroom in the state. They are the outlets' reporting, not Power & Politics findings.

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