It would be hard to find two congressional districts any more different than New York’s 16th, a compact area of the south Bronx that is overwhelmingly Hispanic and black, and Texas’ 13th, a 40,000-square-mile expanse in and around the state’s conservative Panhandle.

These two districts respectively produced the highest vote percentages for Barack Obama and John McCain, according to a CQ Politics analysis of the presidential results in all 435 congressional districts.

McCain won more than 76 percent of the vote in Texas’ 13th, which includes Amarillo and is represented by eight-term Republican William M. “Mac” Thornberry.