With nearly 70 percent of Coloradans having already cast their ballots and the number of undecideds down to decimal points, the last full day of campaigning was like ringing out a dry rag. Campaigns on both sides downloaded the latest lists of not-yet-voteds from the Secretary of State and bombarded a dwindling number of targets.

At a phone bank set up by a conservative advocacy group in the Denver suburbs, volunteers spoke sheepishly, and quickly, after they dialed one of the dozens of cell phones charging in piles around the room.