You can't have it both ways. You're arguing the Democrats simultaneously don't care about leftist voters because they don't show up and vote and aren't a significant enough chunk of the electorate to be worth catering to, yet claiming that this same group not showing up resulted in Hillary's loss against Trump. Which is it? Are we the deciding factor in US electoral politics, or a bunch of rabble-rousers not worth concerning yourself with?

The reality is that Clinton lost the election due to extremely narrow margins in a handful of flyover states not known for being bastions of leftism. Leftists of Lemmy in LA or NYC could have all gone for voter fraud and voted for her multiple times, and she still would not have received any more votes in the electoral college from California or New York, because she already got them all! Conversely, she wouldn't have gotten any fewer votes in Michigan, Pennsylvania or Wisconsin, which were the decisive states at the level of the Electoral College because of leftists in other states.

tl;dr: Get lost with your ahistorical, left punching bullshit.