A comment I left in response at The Right Coast:
He wants a party that represents his views better. I want that too but it’s not available. Until it is I’ll settle for the lesser evil.
The country has changed and the political parties have changed with it. Some of the changes are shocking and undesirable. Trump is a kind of crowdsourced response by middle-class, mostly Republican voters to all of this. Despite his bad qualities he gets some big things right that the political mainstream insists on ignoring. He represents the least-bad option at the moment. As Glenn says, if he is rejected the next least-bad alternative will be even less attractive to the people who complain about Trump.