Which Senate Seats Are Up In 2024. Senate dems face brutal 2024 map with at least eight undecided incumbents. Of the 33 senate seats up for election next term, 23 are held by democrats.
The senate will be up for grabs in 2024, and some of the most closely watched races are already taking shape. Of the 33 senate seats up for election next term, 23 are held by democrats.