5:33 p.m. Caucuses will end in Colorado at 8:00 p.m. CST. The Democrats will allocate 36 of its 71 convention delegates from the caucuses today: 36 delegates are selected in proportion to the statewide vote.
On the Republican side, a nonbinding presidential preference poll will be conducted; none of the state's 46 convention delegates will be allocated tonight.
10:13 p.m. Fox News projects Barack Obama has won the Colorado caucuses. Obama has made a clean sweep of the caucus states so far: Kansas, Minnesota, North Dakota, and Colorado.
10:35 p.m. Republican (19% reporting)
Romney = 54%
McCain = 22%
Huckabee = 16%
Paul = 8%
Mitt Romney seems to be on track for his 6th win of the evening in the Rocky Mountain State. Romney has already won the Montana and North Dakota caucuses, and narrowly lost the West Virginia caucus earlier this afternoon.
10:50 p.m. CNN has called the state for Romney.