It was supposed to be the moment President Donald Trump restarted his campaign. But Saturday night's rally in Tulsa, Oklahoma, became one more in a string of unforced errors, leaving his campaign searching for a reboot to the reboot.

In the hours after the event, advisers and Republican strategists admitted the night was a flop and a missed opportunity to shift the momentum in Trump's direction — and said it was unclear when there might be another rally. Still, they insisted there was plenty of time to recover from the images of a thinly filled arena, headlines about infected aides and a speech that failed to hit on the most pressing issues with voters.