“Heading into 2026, Republicans have about as favorable of a Senate map as they could hope for under the circumstances. This is true despite the fact that the incoming presidential party must defend 22 of the 35 seats that will likely be up for election (including Vance’s and Rubio’s seats). Strikingly, though, only one of those 22 Republican-held seats — held by Sen. Susan Collins of Maine — is in a state that outgoing Vice President Kamala Harris carried in the 2024 presidential election. The other 21 seats are all in states that Trump won. In contrast, Democrats will be defending just 13 seats overall, but two of them are in states that Trump won this year.”
https://abcnews.go.com/538/republicans-start-favorites-2026-senate-elections/story?id=116243572