Rick Santorum was projected the winner of Missouri's primary by NBC News. Mitt Romney was projected to finish second with Ron Paul in third. Former House Speaker Newt Gingrich did not qualify to appear on the state's ballot.
HuffPost's Mark Blumenthal reports:
The Missouri primary [was] a "beauty contest" vote. Although the precinct caucuses in Colorado and Minnesota [began] the process of selecting delegates to the national Republican convention, that process has no formal connection to the "straw votes" ... held at the precinct meetings in each state. So technically, the votes in the two caucus states [being] reported on Tuesday are also non-binding.
(Click here to check out HuffPost's maps for results in each state, which will update with real-time data as the numbers come in.)
Check out the live blog below for the latest developments out of Minnesota, Missouri and Colorado.