Participation in Colorado's delegate selection process is open to registered Democrats.

There are two separate processes in Colorado that are dealt with simultaneously: Caucuses and conventions select Colorado's National Delegates while assemblies designate candidates for nomination at the August Colorado state primary.

Tuesday 6 March 2012: Caucuses meet in each precinct to choose delegates to the County Conventions in proportion to the percentage of the support each candidate receives at said caucuses- a mandatory 15 percent threshold being required for such allocation: during the delegate selection process, a non-binding "straw" poll may be taken before an official poll.

NOTE: It is the Congressional District and the State Conventions [with delegates to both chosen by the aforementioned County Conventions] that will, respectively, actually pledge Democratic National Convention delegates to presidential contenders.

7 March 2012: "More than 11,000 Coloradoans came out for tonight's caucus, which was an important opportunity to engage supporters and expand our grassroots organization, the core of the volunteer organization working to re-elect President Obama" ... "Tonight Coloradans from all 64 counties said, 'I'm in' for President Obama" ... - Colorado Democratic Party Chairman Rick Palacio.

President Obama was the only candidate to register. No formal Presidential Preference vote was taken.

Friday 30 March - Saturday 28 April 2012 (tentative): County Conventions. The County Conventions are held 10 days and 30 days after the caucuses. Delegates to the Congressional District and State Conventions are allocated to presidential contenders in proportion to the percentage of the support each candidate receives at the County Conventions- a mandatory 15 percent threshold being required for such allocation.

NOTE: It is the Congressional District and the State Conventions [with delegates to both chosen by the aforementioned County Conventions] that will, respectively, actually pledge Democratic National Convention delegates to presidential contenders.

Saturday 19 May - Friday 1 June 2012: Congressional District Conventions. 47 of 86 delegates to the Democratic National Convention are pledged to presidential contenders based on the results of the voting in Colorado District Conventions. A mandatory 15 percent threshold is required in order for a presidential contender to be allocated National Convention delegates at the congressional district level.

• 47 district delegates are to be allocated proportionally to presidential contenders based on the convention results in each of the State's 7 congressional districts.
• CD 1: 8
• CD 2: 8
• CD 3: 7
• CD 4: 6
• CD 5: 5
• CD 6: 7
• CD 7: 6

Roughly 500-700 people attended each Convention.

Saturday 2 June 2012: State Convention. 25 of 86 delegates to the Democratic National Convention are pledged to presidential contenders based on the preferences of convention participants as a whole. A mandatory 15 percent threshold is required in order for a presidential contender to be allocated National Convention delegates at the statewide level.

• 16 at-large National Convention delegates
• 9 Pledged PLEOs

The remaining 14 National Convention delegates consist of

• 14 Unpledged PLEO delegates:
• 7 Democratic National Committee members.
• 5 Members of Congress (2 Senators and 3 Representatives).
• 1 Governor.
• 1 Distinguished Party Leader (former DNC Chairman Roy Romer).

These 14 delegates and will go to the Democratic National Convention officially "Unpledged".

Roughly 2,000 delegates attended the State Convention.

Notes:

On Friday 27 May 2011, Governor John W. Hickenlooper (Democratic) signed SB11-189. The law moves the state's partisan primary from the 2nd Tuesday in August to the last Tuesday in June-- 26 June 2012-- ("... a primary election shall be held ... on the last Tuesday in June of even-numbered years ..." [CO Revised Statutes 1-4-101(1)]) and moves the Democratic and Republican Presidential Precinct caucuses from the 1st Tuesday in February to the 1st Tuesday in March-- 6 March 2012-- ("the precinct caucuses shall be held on the first Tuesday in March ..." [CO Revised Statutes 1-3-102 (1) (a) (I)]).