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The Green Party of Colorado is the state party organization for Colorado of the Green Party of the United States.
The Green Party of Colorado first attempted to qualify for statewide ballot status in 1994. While the party was unsuccessful in gaining ballot access, the party did qualify for Qualified Political Organization status. This made it possible to register as a Green in Colorado.
The Green Party of Colorado qualified for statewide ballot status in July 1998 and has retained its ballot status ever since.
In 2000 the Green Party of Colorado hosted the 2000 national convention of the Green Party of the United States in Denver.
In the 2006 mid-term elections Tom Kelly running for U.S. House of Representatives District 1 received 20.2% of the vote, the best finish of any green running for Congress in 2006. 
Presidential nominee results
As of August 2015, Art Goodtimes, Board of Commissioners (San Miguel County) is the only Green officeholder in Colorado.
As of November 2008 there were 9 elected Green officeholders in Colorado. 
- Art Goodtimes, Board of Commissioners (San Miguel County)
- Scott Chaplin, Board of Trustees, Carbondale
- Jeffery Bergeron, Town Council, Breckenridge (Summit County)
- Wendy Mimiaga, Town Board, Dolores (Cortez County)
- Matt Keefauver, Town Council, Cortez (Montezuma County)
- Charlie Green, School Board, District E, Fremont RE-3
- Peter Gleichman, Mayor, Ward, CO (Boulder County)
- Tanya Ishikawa, Federal Heights City Council, Ward I
- Michelle Haynes, Town Board, Norwood