Nassau Republicans still have serious financial muscle, though, and more registered Republicans than any other county.

There are 400,310 registered Republicans voting for 28 delegates.

Dover is one of the few communities in metro Boston to have more registered Republicans than Democrats.

There are 113,400 registered Republicans, 91,200 Democrats and 87,000 unaffiliated, or independents.

It is a district with 3,000 more registered Republicans than Democrats.

There are 614,913 registered Republicans as of January 3, 2012.

New Hampshire has 30 percent more registered Republicans than registered Democrats.

This strategy has kept him in office even though Arizona has 40,000 more registered Republicans than Democrats.

There are 150,000 registered Republicans in the district, 87,000 Democrats and 60,000 independents.

Though the 24th has roughly 40,000 more registered Republicans than Democrats, experts say the race is a tossup.