Romney Sweeps 3 Primaries

Republican presidential candidate, former Pennsylvania Sen. Rick Santorum hugs a boy during his visit to Bob’s Diner in Carnegie, Pa., Wednesday. Santorum’s main opponent, Mitt Romney, won Wisconsin, Maryland and Washington, D.C., on Tuesday. Story here. (AP Photo/Jae C. Hong)

Question: Is it time for Santorum to bow out — and let Romney focus on President Barack Obama?