That doesn't mean liberals don't vote. It may mean other things:
1. Obama voters flipped for Trump (this actually happened in PA)
2. Moderate voters may have stayed home or flipped.
3. Some races were not terribly competitive, so people stayed home even though it would not have mattered for them to vote (e.g. the CA Senate race between two Democrats)
I mean, if you're really a liberal, would you have not voted? Exceptions perhaps being carved out for people who objected specifically to Hillary Clinton because of her other problems... which would mean Democrats need to pick better people as candidates.
