Santorum drops out, clearing the way for Romney

GETTYSBURG, Pa. — Rick San­to­rum cleared the way for Mitt Rom­ney to claim vic­tory in the long and hard-fought bat­tle for the Repub­li­can pres­i­den­tial nom­i­na­tion Tues­day, giv­ing up his “against all odds” cam­paign as Romney’s tena­cious con­ser­v­a­tive rival.