PHILADEPHIA — Bernie Sanders made an impromptu stop at the California delegation breakfast Tuesday to talk to the largest faction of “Bernie-or-bust” delegates and urge them to unify the Democratic Party.

“Elections come and go. What we must do or forever look back in regret is defeat Donald trump and elect Hillary Clinton,” Sanders told the delegates the morning after his address on the convention floor. “It’s easy to boo but it is harder to look your kids in the face who will be living under Donald Trump presidency. Trump is the worst candidate for president in the modern history of this country.”