Gerrymandering is often blamed, or credited, with the GOP majority in the House of Representatives. Oddly, The New York Times reports the results of research which suggests that isn't what's happening.
Jowei Chen and Jonathan Rodden find that the House composition would be very little different if House districts were designed in a nonpartisan fashion by computers. Apparently Democratic voters live in very high concentrations so that they win their districts overwhelmingly, whereas the Republicans are more spread out and win their districts by smaller margins.
