The Memo: The debate that changed everything

ATLANTA — Never before has a debate transformed a presidential race so utterly.

The idea of replacing President Biden as his party’s 2024 nominee has become Topic A in national politics; former President Trump has advanced from a slight to heavy favorite in November’s election; and the collective blood pressure of the Democratic Party has gone through the roof.

It all happened in about 90 minutes on a debate stage here on Thursday night.

For Biden, it really was that bad.