Mitt Romney squeezed out a win in the Buckeye state early Wednesday morning.
According to CNN, Romney took a late lead of more than 12,000 votes over Rick Santorum with 96% of unofficial results counted, and it was clear Santorum would be unable to overcome the difference.
Romney also won the Republican presidential caucuses in Idaho as well as the primaries in Virginia, Vermont and Massachusetts.
Santorum won the North Dakota caucuses and the Oklahoma and Tennessee primaries. Newt Gingrich won Georgia.