CNN And Arizona GOP Host Presidential Debate

MESA, AZ - FEBRUARY 22: A worker prepares the stage for a debate sponsored by CNN and the Republican Party of Arizona at the Mesa Arts Center between Republican presidential candidates U.S. Rep. Ron Paul (R-TX), former U.S. Sen. Rick Santorum, former Massachusetts Gov. Mitt Romney and former Speaker of the House Newt Gingrich on February 22, 2012 in Mesa, Arizona. The debate is the last one scheduled before voters head to the polls in Arizona's and Michigan's primary on February 28 and Super Tuesday on March 6. (Photo by Ethan Miller/Getty Images)