It's So Atlas to think that Alaska, Texas, Georgia, and Montana could be competitive in an election 2 years away, but that Minnesota and Michigan are rock solid safe D no matter what.
I assume you're talking about me. I think it is totally fair to assume at this stage that 2020 will overall be a favorable environment for the Democrats. Trump is deeply unpopular nationally and there seems to be little that could change that underlying fundamental in the next two years given how little opinion on Trump has moved over the past two years. It is possible, of course, that the Democrats nominate a dud of a Presidential candidate, but none of the present contenders seem like they're at risk of being duds, and they're all reasonably high profile.
Literally the exact same paragraph could've (and was!) written in late 2010 about Obama/Democrats being doomed in 2012.
I think it'll be different because a lot of Obama's problems were the economy. I foresee a recession around late 2019 or so (mostly unrelated to Trump's policies, just a cyclical recession) which would put him in a really weak situation given he seems to be flailing around even with a strong economy.
Granted, this is all speculation. Pence could be president in 2020, or somehow the economy is strong even on Nov 2020.