That many Democrats think Trump is vulnerable given the enthusiasm of the Democratic base is another factor. A number of Democrats feel confident they can defeat him in a general election, despite the repeated reminders from Trump allies of how his opponents repeatedly underestimate him.

“Everybody sees this as the jackpot,” said Tobe Berkovitz, a communications professor at Boston University who served as a political media consultant. “Donald Trump is the man they love to hate and because of that, everybody ramps up the strategy of who can hate him the most.”