Mitt Romney, Rick Santorum and Newt Gingrich divided up 10 states on Super Tuesday but Romney won Ohio, the most coveted state up for grabs.

Romney edged out Santorum with 1 percentage point in Ohio. He also won primaries in Virginia, Vermont and Massachusetts, where he once served as a governor, as well as caucuses in Idaho and Alaska. The Associated Press reported that Romney took Ohio with 38 percent of the vote. Santorum received 37 percent, Newt Gingrich 15 percent and Ron Paul 9 percent.

“We're on our way,” Romney told supporters in Boston. “I'm going to get this nomination.”

A last-minute pitch in Ohio from Santorum backers accused Romney of advancing gay rights.

Santorum, considered the most socially conservative candidate in the GOP presidential field, won primaries in Tennessee and Oklahoma, and caucuses in North Dakota.

“We're going to get at least a couple of gold medals and a whole passel full of silver medals,” Santorum told supporters in Steubenville, Ohio. “We're ready to win across this country.”

Georgia stood by Gingrich, who represented the state for 20 years. It was the second win for the former House speaker who previously won South Carolina.

Neither Romney nor Santorum could declare a decisive victory on Tuesday. All four candidates vowed to press on.