First mistake is believing Democrats are leftist. They're also right of moderate, but not quite as right as Republicans. Libertarians are also not really on the spectrum as we know it either. We have no liberal parties that are capable of making a difference.
No, they aren't, and they never will be while their philosophy is based on the thoughts of billionaire simps, race theorists, modern slavers, and pedophiles like Mises and Rothbard.
A socially left libertarian is called an anarchist.
Because leftist policy doesn't bring anyone to the polls other than the right. Only 30% of eligible voters bothered to show up to polls and vote for a black/Indian woman over a Hitler wannabe. That means that a full 70% of eligible voters said they were fine with, or were actively choosing, a child raping felon, who outright said he wanted to execute anyone who ever opposed him and praised Hitler's generals.
You can god damn well bet that the people running the Democratic party learned a lesson, and that lesson is that so called liberals will always come up with an excuse not to vote no matter how dire the situation, but conservatives will show up even for made up shit that has been repeatedly proven to be wrong.
And if you thought the Dems were conservative before... well just wait and see how much farther right they are going to go now chasing the only votes that bother to show up to vote.