Let me rephrase: you are extrapolating the wrong thing when you say the "liberals drastically overplayed their hand" and then use this election as evidence.
Obama almost certainly would have annihilated Trump (his support in rural swing states is much stronger than Hillary's), and he's more liberal than Hillary. For all we know, Bernie could have done decently. Hillary's downfall is that she's seen as an out-of-touch corrupt establishment politician, which Trump (and Obama) were not.
Obama got people excited. He had a message he got out to people and they responded in a huge way. I'm really not sure what Hillary's was.
Trump got a different set excited. Sure some are deplorable. A lot are just republicans. A lot are people who just want their lives to be as good as they used to be, or their parents were.
A vocal minority + rapid societal change + social media echo chambers = reactionary backlash = Donald Trump presidency
>I wouldn't extrapolate much from this election
I would. 60+ million people voting for a man as odious and unprepared as Donald Trump says a whole lot to me. That and pretty much total Republican domination on the state level. The GOP is one state house away from being able to call a new constitutional convention[1].
1: http://www.esquire.com/news-politics/politics/news/a50672/st...