Colorado’s presidential caucus will be on March 6, the 2012 date for Super Tuesday. Nine states will hold their caucus or primary March 6. That is one month later than the 2008 Colorado caucus when Barack Obama and Mitt Romney both won their respective party caucuses handily in record turnout.
The Democratic caucus will be a sleeper, but the Republicans are likely to still be in a fierce battle.
Many states are still considering moves on the calendar, including into December. But, as of today, the 2012 presidential nomination schedule will begin February 6 with the Iowa caucus.
See: The 2012 Presidential Primary Calendar