Wait....gone for whom? The GOP? I am operating under the assumption that the Democrats can't win the House BECAUSE it's gerrymandered.
Gerrymandering spreads a large lead in one area into a small lead in several areas. It can backfire if things are lopsided enough.
That's likely to work only if Hillary wins by a low popular margin.
If she wins by 10 points nationally, then it won't.
Gerrymandering sacrifices high margins/less seats with low margins/high seats.
Exactly. A simple explanation here is that republicans when gerrymandering didn't just pack democrats into small, high democratic districts, they also spread out their OWN highly republican districts to turn areas that were "even" or "leaning democratic" into republican areas.
a very simplistic example would be taking a district that leans republican by 10 points, and a district that's evenly split, and redrawing lines so you have two republican districts that are +5. Again, it's a simplistic example but this is exactly what the GOP ended up doing- sacrificing a lot of areas with heavily republican "lean" to create a lot of districts that are marginally republican:
. The chart below shows PVI ratings for all of the GOP’s House seats. Republicans hold 37 districts rated R+2 or lower and 18 at R+3 or R+4, for a total of 55 marginal districts. Democrats, by contrast, hold half as many.
https://www.washingtonpost.com/news...ig-gerrymander-could-backfire-in-a-major-way/
normally, a 4 or 5 point lean is VERY difficult for democrats to overcome, especially when you consider incumbents tend to have an advantage. Even in a presidential year the national margin is usually only about 3 or 4 points or so. Obama 08 was only 7 points, and that kind of candidate and the record breaking turnout that came with him doesn't show up all that often.
unfortunately, what seems to be happening here is that the republican party ended up running a candidate that was SO bad that they're looking at a historic loss of reagan/mondale proportions. Hillary has several polls in the 9, 10, and 11 point range and there is an argument (based on ground game, and unlikely voters showing up in record numbers) that these estimates are all lowballs. They're losing not only "contestable" districts, but they're losing districts that would have been safe if they had never gerrymandered in the first place.
it's absolutely a disaster.