Biden Age 2024 Prediction. Developed with the assistance of a team of political scientists led by andrew gelman of columbia university, our model calculates kamala harris’s and donald trump’s probabilities of winning each. But she has one clear.

According to fivethirtyeight’s poll average, biden has been deeply unpopular since late 2021 — his average approval rating has been in the high 30s or low 40s. Polls show a tight race.