MILWAUKEE, Wis. >> President Joe Biden is making a rare jump into the 2024 political battleground fray since taking a step back after ending his reelection bid.

He’ll campaign on Tuesday in Pennsylvania for a close ally after a stop in Wisconsin to spotlight a signature legislative achievement.

But as Biden makes a quick swing through the key states, two Democratic senators locked in competitive reelection battles are taking markedly different approaches to the outgoing president, whose approval ratings in a significant swath of the country remain in the pits.

Biden will be fully embraced by Democratic Sen. Bob Casey when he participates in a private campaign fundraiser in suburban Philadelphia for the senior Pennsylvania senator. But in Milwaukee, where Biden is spotlighting efforts to replace the nation’s toxic lead pipes, incumbent Democratic Sen. Tammy Baldwin was conspicuously absent.

— The Associated Press