1. Former Massachusetts governor Mitt Romney, a Republican Party presidential candidate, appears on Fox News Sunday, February 26, 2012

    Romney Insists He’s “Committed Conservative”

    Days before Arizona and Michigan vote in the Republican Party’s presidential primary contest, Mitt Romney appealed to right wing voters.

  1. Former Pennsylvania senator Rick Santorum and former Massachusetts governor Mitt Romney participate in a Republican Party presidential debate in Mesa, Arizona, February 22, 2012 (CNN)

    Santorum Says He Can Win Critical Swing States

    The Republican made no apologies for his social conservatism in what may have been the last primary debate on Wednesday.

  1. Former Pennsylvania senator and Republican Party presidential hopeful appears on MSNBC's Morning Joe, January 10, 2012 (Louis Burgdorf)

    Santorum Steals Conservative Thunder From Gingrich

    The former senator emerges as the right wing alternative to Mitt Romney but his social conservatism could be a problem.

  1. Former Pennsylvania senator Rick Santorum, a Republican Party presidential hopeful, speaks in Denver, Colorado, February 6, 2012 (AP/Chris Carlson)

    Santorum Sweeps Midwest; Wins Three State Contests

    The former Pennsylvania senator won presidential primary votes in Colorado, Minnesota and Missouri on Tuesday.

  1. The Jefferson National Expansion Memorial in St. Louis, Missouri, October 4, 2010 (Pixelmama)

    Colorado, Minnesota Vote in Republican Primary

    Two states in the American West vote in the Republican Party’s presidential primary contest on Tuesday.