The 2024 United States presidential election in Colorado took place on Tuesday, November 5, 2024, as part of the 2024 United States presidential election in which all 50 states plus the District of Columbia participated. Colorado voters chose electors to represent them in the Electoral College via a popular vote. The state of Colorado has 10 electoral votes in the Electoral College, following reapportionment due to the 2020 United States census in which the state gained a seat.

Notably, despite following the nationwide trend toward the Republicans, Colorado did not see as large of a shift rightward compared to other safe blue states, but Republicans did flip one seat in Colorado's congressional delegation. Harris won by 11%, only 2.5% down from Biden in 2020, significantly better than Hillary Clinton's margin of 4.9% in 2016 and exceeding Barack Obama's margins in both 2008 and 2012.

For the second presidential election in a row, Colorado voted to the left of neighboring New Mexico. This was the first time Colorado voted for a Democratic nominee who lost the popular vote since 1908. This was also only the second time the Democratic nominee won Colorado by double digits since 1964, after 2020.

Grand County was the closest Harris came to flipping a county Trump had won in 2020, in terms of margin percentage, with the county shifting leftward from the previous presidential election and Harris only losing the county by a mere 79 votes out of the 9,884 total votes cast in the county. This was also the only state where Trump earned a smaller percentage of the vote than his first run in 2016.

Primary elections Democratic primary

The Colorado Democratic primary was held on Super Tuesday, March 5, 2024.

Republican primary

The Colorado Republican primary was held on Super Tuesday, March 5, 2024.

14th Amendment lawsuit

The Citizens for Responsibility and Ethics in Washington, a left-leaning non-profit, filed a lawsuit on behalf of four Republicans and independent voters, saying that Donald Trump is ineligible to run for president because of a section in the 14th Amendment that states "no person shall ... hold any office, civil or military, under the United States ... who, having previously taken an oath .... as an officer of the United States ... shall have engaged in insurrection or rebellion against the same, or given aid or comfort to the enemies thereof". A trial on this case took place during October and November 2023.See Fourteenth Amendment to the United States Constitution The judge found that Trump engaged in insurrection but declined to remove Trump from the primary ballot, saying there is "scant direct evidence regarding whether the Presidency is one of the positions subject to disqualification". On December 19, 2023, the Colorado Supreme Court ruled that Trump is disqualified from the Presidency under Section 3 of the 14th Amendment and ordered that Trump be removed from the 2024 Colorado Republican presidential primary ballot.

Trump appealed this ruling to the Supreme Court of the United States, and arguments were heard in February. The Colorado decision was stayed pending appeal, and Trump was included on the certified ballot, which began to be mailed to overseas voters on January 20. On March 4, 2024, the Supreme Court issued a ruling unanimously reversing the Colorado Supreme Court decision, ruling that states had no authority to remove Trump from their ballots, and this was instead a power held by Congress.

General election Candidates The deadline for minor party candidates to qualify for the ballot was July 1, 2024, while independents could petition for ballot access until July 11. In September, Colorado secretary of state Jena Griswold published the following candidates as certified to appear on the general election ballot: Kamala Harris / Tim Walz — Democratic Donald Trump / JD Vance — Republican Blake Huber / Andrea Denault — Approval Voting Chase Oliver / Mike ter Maat — Libertarian Jill Stein / Butch Ware — Green Randall Terry / Stephen Broden — American Constitution Cornel West / Melina Abdullah — Unity Robert F. Kennedy Jr. / Nicole Shanahan — unaffiliated Additionally, the state published a list of certified write-in candidates, the deadline for which was on July 18: Chris Garrity / Cody Ballard – unaffiliated Claudia De la Cruz / Karina Garcia — Socialism and Liberation Shiva Ayyadurai / Crystal Ellis – unaffiliated Peter Sonski / Lauren Onak — American Solidarity Bill Frankel / Steve Jenkins – unaffiliated Brian Anthony Perry / Mark Sbani — Democratic

Predictions SourceRankingAs of Cook Political Report December 19, 2023 Inside Elections April 26, 2023 Sabato's Crystal Ball June 29, 2023 Decision Desk HQ/The Hill November 1, 2024 CNalysis December 30, 2023 CNN August 25, 2024 The Economist October 21, 2024538 October 30, 2024 NBC News October 6, 2024 YouGov October 16, 2024 Split Ticket November 1, 2024

Polling Kamala Harris vs. Donald Trump Poll source Date(s)administered Samplesize Marginof error KamalaHarris DonaldTrump Other /UndecidedKeating ResearchOctober 28−30, 2024600 (LV)± 4.0%53%41%7%YouGovOctober 18−30, 2024754 (LV)± 4.54%55%41%4%ActiVoteOctober 1−30, 2024400 (LV)± 4.9%57%43%–ActiVoteSeptember 15 − October 19, 2024400 (LV)± 4.9%59%41%–Morning ConsultSeptember 9−18, 2024512 (LV)± 4.0%53%42%5%Keating ResearchSeptember 11–14, 2024500 (LV)± 4.4%53%42%5%Morning ConsultAugust 30 – September 8, 2024498 (LV)± 4.0%55%40%5%

Joe Biden vs. Donald Trump

Poll source Date(s)administered Samplesize Marginof error JoeBiden DonaldTrump Other /Undecided July 21, 2024 Joe Biden withdraws from the race.Global Strategy Group (D)June 17–24, 2024800 (RV)± 3.5%50%40%10%John Zogby StrategiesApril 13–21, 2024529 (LV)–49%43%8%New Bridge Strategy (R)/Aspect Strategic (D)March 15–19, 2024632 (LV)± 4.0%49%39%12%Mainstreet Research/Florida Atlantic UniversityFebruary 29 – March 3, 2024170 (LV)–48%44%8%179 (RV)48%43%9%Emerson CollegeJanuary 23–28, 20241,856 (RV)± 2.2%41%35%24%Global Strategy Group (D)January 22–28, 2024801 (RV)± 4.2%49%41%10%YouGov/University of Colorado BoulderDecember 1–18, 2023800 (A)± 4.2%47%40%13%Cygnal (R)/Aspect Strategies (D)November 26–27, 2023652 (LV)± 3.8%45%36%19%Emerson CollegeOctober 1–4, 2023477 (LV)± 4.4%42%38%20%Public Opinion Strategies (R)May 7–9, 2023500 (LV)–49%39%12%Emerson CollegeOctober 26–29, 20221,000 (LV)± 3.0%47%39%14%Emerson CollegeSeptember 18–19, 20221,000 (LV)± 3.0%46%36%18%McLaughlin & Associates (R)July 24–26, 2022500 (LV)± 4.4%50%43%6%Blueprint Polling (D)April 6–8, 2022612 (V)± 4.0%43%43%14%

Joe Biden vs. Donald Trump vs. Robert F. Kennedy Jr. vs. Cornel West vs. Jill Stein Poll source Date(s)administered Samplesize Marginof error JoeBiden DonaldTrump RobertKennedy Jr. CornelWest JillStein Other /Undecided July 21, 2024 Joe Biden withdraws from the race.Global Strategy Group (D)June 17–24, 2024800 (RV)± 3.5%42%36%12%2%3%5%

Joe Biden vs. Ron DeSantis Poll source Date(s)administered Samplesize Marginof error JoeBiden RonDeSantis Other /UndecidedYouGov/University of Colorado BoulderDecember 1–18, 2023800 (A)± 4.2%46%33%21%Public Opinion Strategies (R)May 7–9, 2023500 (LV)–44%41%15%

Joe Biden vs. Robert F. Kennedy Jr. Poll source Date(s)administered Samplesize Marginof error JoeBiden RobertKennedy Jr. Other /UndecidedJohn Zogby StrategiesApril 13–21, 2024529 (LV)–42%48%10%

Robert F. Kennedy Jr. vs. Donald Trump Poll source Date(s)administered Samplesize Marginof error RobertKennedy Jr. DonaldTrump Other /UndecidedJohn Zogby StrategiesApril 13–21, 2024529 (LV)–47%35%18%

Generic Democrat vs. generic Republican Poll source Date(s)administered Samplesize Marginof error GenericDemocrat GenericRepublican Other /UndecidedBlueprint Polling (D)April 6–8, 2022612 (V)± 4.0%43%42%16%

Results

By county