According to people much more knowledgeable than yourself, they did:
The Non-Voters Who Decided The Election: Trump Won Because Of Lower Democratic Turnout
The story of Hillary Clinton’s defeat, then, is not the Trump Movement erupting in the ballots, nor the fable that some “Reagan Democrats” flipped again from Obama to Trump. The story is altogether different, and very simple: the Democratic base did not turn out to vote as it did for Obama. Those sure-Democrats who stayed home handed the election to Trump.
Take Michigan for example. A state that Obama won in 2012 by 350,000 votes, Clinton lost by
roughly 10,000. Why? She received 300,000 votes less than Obama did in 2012. Detroit and Wayne County should kick themselves because of the 595,253 votes they gave Obama in 2012, only 518,000 voted for Clinton in 2016. More than 75,000 Motown Obama voters did not bother to vote for Clinton. They did not become Trump voters – Trump received only 10,000 votes more than Romney did in this county. They simply stayed at home. If even a fraction of these lethargic Democrats had turned out to vote, Michigan would have stayed blue.
Wisconsin tells the same numbers story, even more dramatically. Trump got no new votes. He received exactly
the same number of votes in America’s Dairyland as Romney did in 2012. Both received 1,409,000 votes. But Clinton again could not spark many Obama voters to turn out for her: she tallied 230,000 votes less than Obama did in 2012. This is how a 200,000-vote victory margin for Obama in the Badger State became a 30,000-vote defeat for Clinton.