2020 United States presidential election in Colorado

The 2020 United States presidential election in Colorado was held on Tuesday, November 3, 2020, as part of the 2020 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, pitting the Republican Party's nominee, incumbent President Donald Trump, and running mate Vice President Mike Pence against Democratic Party nominee, former Vice President Joe Biden, and his running mate California Senator Kamala Harris. Colorado has nine electoral votes in the Electoral College.
The Democratic National Committee (DNC) proposed Denver as a finalist to host the 2020 Democratic National Convention, but the city declined, citing conflicts. The DNC ultimately decided to hold the convention in Milwaukee, Wisconsin.
Prior to the election, all 14 news organizations considered Colorado a state Biden would win, or a likely blue state. On the day of the election, Biden won Colorado with over 55% of the vote, and by a victory margin of 13.50%, the strongest Democratic performance since Lyndon B. Johnson in 1964, and the first time since 1984 that the margin was in the double digits. It was also the first time since the 1968 election that Colorado voted more Democratic than New Mexico, its neighbor to the south. In this election, Colorado weighed in as 9.1% more Democratic than the nation as a whole. The results solidified Colorado as a Democratic stronghold, rather than the Democratic-leaning battleground state it had been for the past three election cycles. Biden's win also marks the first time in presidential election history that the state has voted for the Democratic Party in four presidential elections in a row since statehood since it voted for Barack Obama in 2008 and in 2012 as well as Hillary Clinton in 2016. Per exit polls by the Associated Press, changing demographics made Colorado more favorable to Democrats, with Latinos backing Biden with 68%, including Latinos of Mexican heritage with 75%. Biden also carried whites with 53%. 69% of voters favored increasing federal government spending on green and renewable energy, and they favored Biden by 76%–23%.
Biden narrowly flipped Pueblo County, which had been reliably Democratic before narrowly backing Trump in 2016. Biden also flipped Chaffee County, which backed Barack Obama in 2012, and became the first Democrat to win Garfield County since 1992. Additionally, Biden became the first Democrat to win more than 40% in the populous Republican stronghold of El Paso County since 1964. Nevertheless, Biden became the first Democrat since Woodrow Wilson in 1912 to win the White House without carrying Las Animas County.
Trump, however, did flip Alamosa County, which had not voted Republican since 2004. 
This marks the first time since 1968 in which neighboring New Mexico was more Republican (in terms of margins) than the state of Colorado. The margin of victory for Biden in New Mexico being 10.79%, 2.71% lower than Colorado.
Primary elections.
The primary elections were held on Super Tuesday, March 3, 2020.
Republican primary.
The Republican primary was due to be canceled until Robert Ardini, a retired advertising executive, decided to submit his name for the ballot. Several others subsequently joined him. 
General election.
By congressional district.
Biden won 4 out of the 7 congressional districts in Colorado.