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Rick Santorum is "glitter bombed" as the start of a campaign rally Feb. 7, 2012 in Blaine, Minnesota.
GOP presidential candidate Ron Paul thanks supporters for their effort following a strong showing in that state.
Rick Santorum swept Tuesday's Republican presidential contests in Colorado, Minnesota and Missouri, sending a signal to Romney that voters are still skeptical of his conservative credentials. NBC's Peter Alexander reports.
NBC's Chuck Todd tells TODAY's Ann Curry that Rick Santorum's sweep of Tuesday's GOP presidential contests was a "rejection by conservatives of Mitt Romney."
Charles Rex Arbogast / AP
Republican presidential candidate, former Pennsylvania Sen. Rick Santorum speaks about healthcare, Monday, Feb. 6, 2012, in Rochester, Minn.
Republican presidential hopefuls have been campaigning in advance of contests Tuesday in Colorado, Minnesota and Missouri with a total of 70 delegates up for grabs. NBC's Peter Alexander reports.
Larry Downing / Reuters
U.S. President Barack Obama talks about the economy at Fire Station Number Five in Arlington, Virginia February 3, 2012.
President Obama announced he's given the green light to super PACs for his own campaign, and frontrunner Mitt Romney is aiming new attacks at Rick Santorum.
TODAY's Matt Lauer sits down exclusively with President Obama, who talks about the violence in Syria and the challenge of having a family life on the public stage.