I was reading
this diary and saw the comment about God gerrymandering Delay out with blue evacuees. Thinking about it, I realized that the mass movement from the storm does amount to a blue gerrymander.
The evacuees are mostly blue voters from mostly blue districts. Many aren't coming back, and so they will tend to "blue up" the districts they arrive in, most notably Houston and Baton Rouge areas. Baton Rouge's population has doubled - that's going to cause a
huge political shift even after many move on. I would also expect them to be politicized although I'm less sure of that. The districts they left behind, however, aren't going to get redistricted until 2012 (can you imagine the outcry if they were?) So on the statehouse and House level I expect a boost for the Dems even beyond that from Bush's outrageous mismanagement
Things are less good for the Senate, Governorships, and the Presidency. While politicized, the disruption will interfere with voting for a while. In addition, we have blue votes in a swing state (LA) moving to a non-swing state (TX). So it's a problem for Landrieu and Blanco but probably not Perry and Hutchinson (esp since Perry has done well in the relief department)