The president's approval rating fluctuates state by state, including in states he won in the 2024 presidential election.

Joe Biden dropped out of the 2024 presidential election and named Kamala Harris as his successor. Here are the key battleground states to win.

First, for all of the contests in 538's state and national presidential general election polling database (which goes back all the way to 1948, thanks to the tireless work of our research team ...