According to a survey released by Public Policy Polling on Monday night, former U.S. Senator Rick Santorum was running in second place going into the contest, followed by former House Speaker Newt Gingrich and U.S. Rep. Ron Paul.
The AP reports:
Colorado's Republican Party projected caucus attendance at between 70,000 and 80,000 voters, out of roughly 783,000 registered party voters overall. That's about the same caucus participation as in 2008, when Republicans chose Mitt Romney over John McCain.
(Click here to check out HuffPost's Colorado caucus results map, which will update with real-time data as the numbers come in.)
Check out the live blog below for the latest developments out of Colorado.