Even at a 5% uniform swing from 2012 the Dems still win. PA is untouchable simply because of how terrible the state party had been. People here really need to pull their head out of the sand and check reality. There is no reality to thinking the GOP will have such a massive swing come 2020 to have a landslide in which they pick up such states such as Illinois, Oregon, New Hampshire and Minnesota. That's just blatant partisan thinking.
You don't think people thought the same thing about the Democrats in 1986? Six years is a long time. I admit that two years is not and things are not looking good for the GOP in '16, but it's way too early to say anything about 2020.