Where would you find Republicans in the United States?

Well there's plenty of places, but one interesting location of note is the Oklahoma Panhandle (that's the little "finger" that juts out eastward from the state).

The Oklahoma Panhandle is one of the most universally Republican areas of the nation. In the 2008 U.S. Presidential election, the three counties gave a weighted average of 87.5% of their votes to John McCain and 12.5% to Barack Obama, with McCain carrying the state over Obama 65.6% to 34.4%.

http://en.wikipedia.org/wiki/Oklahoma_Panhandle