Colorado: Last grab at nailing last votes

The last-gasp scraping of every possible vote by both candidates in Colorado's U.S. Senate race matches sophisticated computer technology with old-fashioned door knocking. Democratic Sen. Michael Bennet sends Latino lieutenants to hang signs in restaurants on Santa Fe Drive in metro Denver, while Republican Ken Buck glad-hands Washington County commissioners and dotes on shoulder-sitting toddlers on the Eastern Plains.

"I can see that race coming down to margins of hundreds of votes," said Colorado State University political science professor Kyle Saunders.