Mitt Romney has won Virginia, Massachusetts and Vermont on Super Tuesday.
More delegates were up for grabs on this Super Tuesday than had been previously allocated to the remaining GOP candidates after two months of voting, according to NBC News projections. Between the 10 states holding primaries or caucuses and Wyoming, which will allocate five of its 26 delegates, a total of 424 of the 1,144 delegates needed to win the nomination are at stake.
The stakes were arguably highest in Ohio, where front-running candidate Mitt Romney had squared off principally against former Pennsylvania Sen. Rick Santorum. Both Romney and Santorum spent much of Monday in Ohio re-fighting their battle from just a week earlier in Michigan, where the former eked out a win in the state where he was raised.
During the intervening week, Romney has eaten into an advantage Santorum held in the polls; the state was seen as locked in a virtual tie between the two candidates by the end of Monday.