33 Senate seats are up for election in next year’s mid-terms. The Republicans currently have a slim 52-48 majority

52

46

Republicans

Democrats

50%

33

8

25

2

seats up

for election

Independent*

*Caucus with the Democrats

52

46

2

Republicans

Democrats

Independent*

50%

8

33

25

seats up

for election

*Independents caucus with the Democrats