The South's turn: Romney, Santorum, Gingrich vie

WASHINGTON (AP) — Mitt Romney collided with rivals Rick Santorum and Newt Gingrich on Tuesday in primaries in Alabama and Mississippi, hotly contested Southern crossroads in the struggle for the Republican presidential nomination.

Caucuses in Hawaii were also on the calendar in the race to pick an opponent to President Barack Obama this fall.

There were 107 Republican National Convention delegates at stake, 47 in Alabama, 37 in Mississippi, 17 in Hawaii and six more in caucuses in American Samoa.

AP Photo/David Goldman

Danny Cooper, of Chilton County, Ala. waves to motorists outside a polling...