Two weeks ago, the candidates were basically tied in Colorado, with the president edging his Republican challenger 49% to 48%. In mid-September, it was Romney 47%, Obama 45%. The candidates were tied in the two surveys prior to that. Obama defeated Republican John McCain 54% to 45% in Colorado in the 2008 election.

Ninety-six percent (96%) of Colorado likely voters say they are certain to vote in this election, and Romney leads 51% to 47% in this group. This overall total includes those who have already voted since Colorado allows early voting. It’s Romney 50%, Obama 49% among early voters.

However, just 62% of all likely voters in the state say they have already decided whom they will vote for. Romney’s ahead 56% to 41% among these voters. The president leads 54% to 41% among the 38% who say they still could change their minds before they vote.