White working class voters will stand behind him once again
i'm not sure..i guess as usual it depends heavily on how you define that
I would define it by non-college degree whites with middle to lower than average incomes.
I'm also a little tired of the phrase "Democrats have nobody who excites and therefore a poised to lose". Jimmy Carter, Bill Clinton and Barack Obama as well as Bernie to some degree came out of nowhere or were unknown nationally and did pretty well. So I'm not buying this stuff.
Of course, Trump can get reelected, but it's ridiculous to say Democrats are DOA. At the moment, Trump is far more likely to lose than to win.
Every one of those people either had extreme charisma, new ideas, or crossover appeal. I don't see any Democrat that has any of those strengths unless a celebrity runs or something.
The fact that we don't define "White working class" as Whites below a certain income level is truly ridiculous. Trump almost unquestionably did better among wealthy WWC voters than lower to middle-income ones that you seem to insinuate were his best demographic.