There shouldn’t be much question about whether 2018 was a wave election. Of course it was a wave. You could endlessly debate the wave’s magnitude, depending on how much you focus on the number of votes versus the number of seats, the House versus the Senate versus governorships, and so forth. …
This year’s results do serve as a warning to Trump in one important sense, however: His base alone will not be enough to win a second term. Throughout the stretch run of the 2018 midterm campaign, Trump and Republicans highlighted highly charged partisan issues, from the Central American migrant caravan to Brett Kavanaugh’s confirmation to the Supreme Court. And Republican voters did indeed turn out in very high numbers: GOP candidates for the House received more than 50 million votes, more than the roughly 45 million they got in 2010.
But it wasn’t enough, or even close to enough. CONT.
Nate Silver, FiveThirtyEight