Joe Biden is deeply unpopular. But can Democrats find an alternative for 2024?

The Democrats find themselves with a 2024 conundrum. Joe Biden, the party’s standard-bearer, is widely disliked. A new poll found that a 64% of Democrats would want a candidate other than Biden to seek the nomination in two years. Rapid inflation has eaten away at the 79-year-old president’s popularity and he is viewed as increasingly out of touch, a vestige of another era that many voters want to leave behind.

At the same time, Biden will easily win a Democratic primary if he runs again. Sitting presidents are rarely forced aside. The...