US Senate seats likely to flip in 2020,2022,and 2024.

2020
D to R
AL(Jones-D) Sessions-R 46D 54R
R to D
AZ special(McSally-R) Kelly-D 47D 53R
CO(Gardner-R)Hickenlooper-D 48D 52R
NC(Tillis-R)Cunningham-D 49D 51R
2022
D to R
AZ(Kelly-D) if Ducey-R runs. 48D 52R
NH(Hassan-D) if Sununu-R runs. 47D 53R
R to D
IA(OPEN Grassley-R) Finkenaur-D or Axne-D 48D 52R
NC(OPEN Burr-R) Cooper-D or Stein-D 49D 51R
PA(Toomey-R) Shapiro-D or Lamb-D 50D 50R
WI(OPEN Johnson-R) Barnes-D or Kaul-D 51D 49R
2024
D to R
MT(Tester-D) Stapleton-R 50D 50R
WV(Manchin-D) Mooney-R 49D 51R
R to D
FL(Scott-R) Murphy-D 50D 50R
TX(Cruz-R) Fletcher-D or Allred-D 51D 49R