I think the Democrats have basically picked up their ball and gone home. They have withdrawn from any leadership role for the vast majority of voters and instead seem to have decided to lunge Left while trying to force the Republicans to lunge Right by attacking them on any attempt to govern in the moderate way preferred by most voters. The border is a perfect example.
This strategy contains a huge, one might say YUGE flaw, and that is that nobody can accuse Donald Trump of being a starry-eyed idealistic purist. This is no longer the party of George W. Bush that descended into litmus tests and demands that everyone bow down, right or wrong. This is the party of a pragmatic businessman and there is a big difference.
The Democratic party is trying to dictate the terms of the American people’s surrender without realizing that Trump is looking better by the day.