WASHINGTON — Mitt Romney has won Ohio's Republican presidential primary, narrowly defeating Rick Santorum in the most critical and hard-fought of the Super Tuesday contests.
In all, Romney has gained victories in five Super Tuesday states. The other states he's won are Massachusetts, Vermont, Virginia and Idaho.
Santorum has won Tennessee, Oklahoma and North Dakota, while Newt Gingrich has won his home state of Georgia.
Results from Alaska's caucuses have not yet been reported.