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Republican presidential candidate, former Massachusetts Gov. Mitt Romney and wife, Ann, take the stage at an election night rally in Manchester, N.H., Tuesday, April 24, 2012. (AP Photo/Jae C. Hong)

HARRISBURG, Pa. — Former Massachusetts Gov. Mitt Romney is adding Pennsylvania to the list of states he's won on the way to the Republican nomination for president.

Romney also won Connecticut, Rhode Island and Delaware on Tuesday, with New York's result still undetermined.

The Pennsylvania primary lost much of its drama two weeks ago, when former U.S. Sen. Rick Santorum suspended his campaign.

Under Pennsylvania Republican rules, the results don't necessarily mean Romney's won the state's delegates to this August's national convention in Tampa, Fla.

The 72 delegates from Pennsylvania are free to support the candidate of their choice at the convention.