The poll, from YouGov, asked about the 2024 Democratic presidential primary; only 21 percent of Democratic-leaning voters said their choice was the incumbent Democratic president, Joe Biden. That put him barely ahead of the 18 percent who said they weren’t sure whom they supported; Vice President Harris and Bernie Sanders each had 14 percent shares.

This is not normal. We’ve seen some evidence that Democrats aren’t sold on nominating Biden for a second term, including a poll in November showing a majority of Democrats didn’t want him to run again. But lots of Republicans say the same about a repeat run for Donald Trump in 2024 — yet he’s the clear front-runner when you pit him against actual would-be opponents.