Now Playing

Santorum's Latest Wins Spread Conservative Message

Rick Santorum surprised the Republican presidential field this week when he chalked up victories against front-runner Mitt Romney in Minnesota, Colorado and Missouri. Few would have predicted six months ago that the former U.S. senator from Pennsylvania would still be a contender this late into the primary season. To find out why he has been able to defy the odds, Steve Inskeep talks to John Brabender, Santorum's senior media adviser.

Trouble listening? See our technical support page.