I will not be surprised if the Democrats attempt to get displaced Louisiana citizens living outside of Louisiana declared eligible to vote in Louisiana, ala the military.
You can take that to the bank. I'd lay good money on that...
I'll bet there'll also be a push to suspend ALL requirements for ID when issuing voter registrations ("We can't disenfranchise these poor folks who lost all their identification in the flood!")
It'll be Motor Voter on wheels. Um, on bigger wheels. :)