They didn't in the last couple. Those elections went 49% vs 51%. I don't hold out a lot of hope for the next couple. They feign surprise, but it isn't like it was a mystery as to what he was going to do. He campaigned on everything he is doing.
The great fiction of American politics at this point seems to be the belief that the non-voting population are definitely an election margin who'll definitely come and vote for you provided you support <commentators preferred policy here>.