Voting across 10 states marks the busiest day of the Republican race for president and is expected to determine whether former Massachusetts Gov. Mitt Romney solidifies his status as party front-runner or faces further threats from his challengers.
Romney and former Pennsylvania Sen. Rick Santorum are locked in a tight battle for Ohio. Former House Speaker Newt Gingrich hopes a big win in Georgia will give new life to his struggling campaign .
With 419 delegates at stake, Super Tuesday states offer a sizable slice of the 1,144 delegates required to clinch the GOP nomination.
Still, the apportionment of delegates based on vote percentage and the different regions the candidates are emphasizing are expected to push the race further into March.