| Headquarters: | Denver, Colorado |
| Chairperson: | Shad Murib |
| Leader1 Title: | Governor |
| Leader1 Name: | Jared Polis |
| Leader2 Title: | Lieutenant Governor |
| Leader2 Name: | Dianne Primavera |
| Leader4 Title: | House Speaker |
| Leader4 Name: | Julie McCluskie |
| Leader3 Title: | Senate President |
| Leader3 Name: | Steve Fenberg |
| Seats1 Title: | U.S. Senate |
| Seats2 Title: | U.S. House |
| Seats3 Title: | Statewide offices |
| Seats4 Title: | Colorado Senate |
| Seats5 Title: | Colorado House of Representatives |
| Seats6 Title: | Colorado State Board of Education |
| Seats7 Title: | University of Colorado Board of Regents |
| National: | Democratic Party |
| Colors: | Blue |
| Country: | Colorado |
| Membership Year: | 2024 |
| Membership: | 997,611[1] |
| Ideology: | Modern liberalism |
The Colorado Democratic Party is the affiliate of the Democratic Party in the U.S. state of Colorado. Shad Murib serves as its chair.[2]
The governing body of the party is the State Central Committee, which consists of the chair and vice chair of the county Democratic Party in each of Colorado's 64 counties and "bonus" members for larger counties. In each odd-numbered year, county parties elect officers in February followed by the state party which elects its officers in March.
It is currently the dominant party in the state, controlling both of the state's U.S. Senate seats and all statewide executive offices, including the governorship. The Democrats also have a supermajority in the Colorado House of Representatives, and hold a majority of its U.S. House districts.
The Colorado Democratic Party manages and oversees statewide coordinated campaigns and is responsible for arranging and staging the state convention in Presidential years and the state assembly every two years. The state convention selects delegates to the Democratic National Convention and Colorado's Presidential electors. The state's assemblies designate candidates for statewide, congressional, district attorneys, state legislative and county offices, including the offices of Governor, Attorney-General, Secretary of State, Treasurer, C.U. Regent At-Large, Board of Education Director At Large, and United States Senator. The party also adopts its platform at the state convention.
Based on their 2010 party platform, it is Democratic Party of Colorado's goal to respect all people, no matter of race, religion, sex, or ethnicity and pledge to them that they will build and maintain a nation that is secure and respected worldwide. With that in mind, the Colorado Democratic party promises to maintain the same, high standards for all international relations by supporting the equal right of all people to have freedom of expression, religion and the pursuit of happiness. Additionally, they promise a quality public education, a clean and safe environment, a healthy future, and a fair living wage. It is their goal to create an ethical government and society that is fair, open and accountable to all people. They vow to accept fundamental responsibility to all future generations and to pursue only policies that are sustainable and maintain or improve global well-being.
Democrats hold all of the state's five statewide offices, a majority in the Colorado House of Representatives and a majority in the Colorado Senate. The party also holds both of the state's U.S. Senate seats and five of its eight U.S. House of Representatives seats.
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The following Democrats hold prominent mayoralties in Colorado:
| 1876 | Bela M. Hughes | 13,316 | 48.47% | Lost | |
| 1878 | William A. H. Loveland | 11,535 | 40.30% | Lost | |
| 1880 | John S. Hough | 23,547 | 44.08% | Lost | |
| 1882 | James Benton Grant | 31,375 | 51.07% | Won | |
| 1884 | Alva Adams | 30,743 | 46.09% | Lost | |
| 1886 | Alva Adams | 29,234 | 49.66% | Won | |
| 1888 | Thomas M. Patterson | 39,197 | 42.64% | Lost | |
| 1890 | Caldwell Yeaman | 35,359 | 42.36% | Lost | |
| 1892 | Joseph H. Maupin | 8,944 | 9.63% | Lost | |
| 1894 | Charles S. Thomas | 8,337 | 4.63% | Lost | |
| 1896 | Alva Adams | 87,387 | 46.22% | Won | |
| 1898 | Charles S. Thomas | 93,966 | 62.89% | Won | |
| 1900 | James Bradley Orman | 118,647 | 53.78% | Won | |
| 1902 | E. C. Stimson | 80,727 | 43.21% | Lost | |
| 1904 | Alva Adams | 123,092 | 50.64% | Won | |
| 1906 | Alva Adams | 74,416 | 36.63% | Lost | |
| 1908 | John F. Shafroth | 130,141 | 49.41% | Won | |
| 1910 | John F. Shafroth | 114,676 | 51.04% | Won | |
| 1912 | Elias M. Ammons | 114,044 | 42.91% | Won | |
| 1914 | Thomas M. Patterson | 90,640 | 34.17% | Lost | |
| 1916 | Julius Caldeen Gunter | 151,912 | 53.27% | Won | |
| 1918 | Thomas J. Tynan | 102,397 | 46.47% | Lost | |
| 1920 | James M. Collins | 108,738 | 37.11% | Lost | |
| 1922 | William Ellery Sweet | 138,098 | 49.64% | Won | |
| 1924 | William Ellery Sweet | 151,041 | 44.04% | Lost | |
| 1926 | Billy Adams | 183,342 | 59.84% | Won | |
| 1928 | Billy Adams | 240,160 | 67.05% | Won | |
| 1930 | Billy Adams | 197,067 | 60.41% | Won | |
| 1932 | Edwin C. Johnson | 257,188 | 57.23% | Won | |
| 1934 | Edwin C. Johnson | 237,026 | 58.11% | Won | |
| 1936 | Teller Ammons | 263,311 | 54.57% | Won | |
| 1938 | Teller Ammons | 199,562 | 40.02% | Lost | |
| 1940 | George E. Saunders | 245,292 | 44.96% | Lost | |
| 1942 | Homer Bedford | 149,402 | 43.41% | Lost | |
| 1944 | Roy Phelix Best | 236,086 | 47.60% | Lost | |
| 1946 | William Lee Knous | 174,604 | 52.11% | Won | |
| 1948 | William Lee Knous | 332,752 | 66.33% | Won | |
| 1950 | Walter Walford Johnson | 212,976 | 47.22% | Lost | |
| 1952 | John W. Metzger | 260,044 | 42.42% | Lost | |
| 1954 | Edwin C. Johnson | 262,205 | 53.56% | Won | |
| 1956 | Stephen McNichols | 331,283 | 51.34% | Won | |
| 1958 | Stephen McNichols | 321,165 | 58.41% | Won | |
| 1962 | Stephen McNichols | 262,890 | 42.64% | Lost | |
| 1966 | Robert Lee Knous | 287,132 | 43.50% | Lost | |
| 1970 | Mark Anthony Hogan | 302,432 | 45.24% | Lost | |
| 1974 | Richard Lamm | 441,199 | 53.22% | Won | |
| 1978 | Richard Lamm | 483,985 | 58.76% | Won | |
| 1982 | Richard Lamm | 627,960 | 65.69% | Won | |
| 1986 | Roy Romer | 616,325 | 58.20% | Won | |
| 1990 | Roy Romer | 626,032 | 61.89% | Won | |
| 1994 | Roy Romer | 619,205 | 55.47% | Won | |
| 1998 | Gail Schoettler | 639,905 | 48.43% | Lost | |
| 2002 | Rollie Heath | 475,373 | 33.65% | Lost | |
| 2006 | Bill Ritter | 888,095 | 57.0% | Won | |
| 2010 | John Hickenlooper | 915,436 | 51.1% | Won | |
| 2014 | John Hickenlooper | 1,006,433 | 49.30% | Won | |
| 2018 | Jared Polis | 1,348,888 | 53.42% | Won | |
| 2022 | Jared Polis | 1,468,481 | 58.5% | Won |