I don't pretend to have enough of a macro-view on the numbers to be able to say that the House elections broke the way they did solely because of the 2010 redistricting process, but you seem to be excluding the possibility that incumbency advantage and more favorably-drawn home districts could be playing any role in the Republican's retention of control over the House. Is that a data-driven consideration? If so, what is the relevant data you're relying on?