You don't need to get them back, you just need to motivate the more normal voters and demoralize the weird ones. There seem to be people who voted for Trump as

You don't need to get them back, you just need to motivate the more normal voters and demoralize the weird ones. There seem to be people who voted for Trump as an anti establishment candidate. Now, they're obviously completely unmoored from reality, but perhaps they'd like another anti establishment candidate?