In this April 3, 2012, file photo, Republican presidential candidate, former Pennsylvania Sen. Rick Santorum speaks during a primary election night party in Cranberry, Pa. (AP Photo/Jae C. Hong, File)
April 10, 2012 12:00:00 AM PDT
By MARC LEVY
GETTYSBURG, Pa. --
Bowing to the inevitable after an improbably resilient run for the White House, Rick Santorum quit the presidential race on Tuesday, clearing the way for Mitt Romney to claim the Republican nomination.