Romney wins Pa. and 3 other GOP primaries
By Associated Press
Apr 24, 2012 8:13 PM CDT
A supporter wears a campaign sticker for Republican presidential candidate, former Massachusetts Gov. Mitt Romney at an election night rally in Manchester, N.H., Tuesday, April 24, 2012. (AP Photo/Jae C. Hong)   (Associated Press)

Mitt Romney has added a win in Pennsylvania's Republican presidential primary to GOP victories in Connecticut, Rhode Island and Delaware.

A total of five state primaries are being held Tuesday _ the fifth is in New York.

The five primaries are the first since Rick Santorum suspended his presidential campaign two weeks ago, essentially conceding the GOP nomination to Romney.

Pennsylvania is Santorum's home state.

Romney is still about 400 delegates short of the number he needs to formally gain his party's presidential nomination this summer at the Republican National Convention. There are 209 delegates at stake in Tuesday's five primaries.

Newt Gingrich had campaigned heavily in Delaware, hoping for a win there.