What Senate Seats Are Up For 2024. Joe manchin’s decision not to run for reelection has essentially handed the seat to republicans, who need just one or two seats to flip the senate, depending on who. If democrats are to end up with 50 seats this year, they will have to win at least one state where in 2020 republicans led by ten or more points more than the national average.

Bob casey’s seat remains the 7th most likely to flip. Nine of the top 10 seats on cnn’s latest ranking of the senate seats most likely to flip are held by democrats (or independents who caucus with them).