Slideshow: Rick Santorum's campaign for president
Republican presidential candidate, former U.S. Sen. Rick Santorum holds up an Etch-A-Sketch as he speaks to supporters at a "Rally for Rick," at Ledgeview Bowling Lanes on March 25, 2012 in Fond du Lac, Wisconsin.
Mark Hirsch/Getty Images
Rick Santorum is suspending his campaign for the GOP presidential nomination, clearing a path for Mitt Romney to become the nominee. Santorum faced a tough fight in his home state of Pennsylvania against Romney.
The slideshow above shows scenes from Santorum's presidential bid.
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