The best of UPI's photos of 2012's GOP primary race.
Republican Presidential candidate Mitt Romney throws an apple to the crowd as he speaks at a campaign rally at the Harmon Tree Farm in Gilbert, South Carolina on January 20, 2012. UPI/Kevin Dietsch
Republican presidential hopeful Rick Santorum holds up a block of shale as he speaks to supporters at a primary election night rally on February 28, 2012 in Grand Rapids, Michigan. UPI/Brian Kersey
Supporters of Republican presidential hopeful Rick Santorum hold campaign signs at a primary election night rally on February 28, 2012 in Grand Rapids, Michigan. UPI/Brian Kersey
Republican presidential hopeful Rick Santorum (L) and his wife Karen walk out onto the stage before speaking to supporters at a primary election night rally on February 28, 2012 in Grand Rapids, Michigan. UPI/Brian Kersey