Democratic party's 51st US Senate seat after 2020 is MT or IA. [View all]

35 Democratic held US Senate seats are not up for re-election in 2020.
Democrats will win-
Safe D
1/36)RI(Reed-D)
2/37)MA(Markey/Kennedy-D)
3/38)DE(Coons-D)
4/39)IL(Durbin-D)
5/40)NJ(Booker-D)
6/41)OR(Merkley-D)
7/42)VA(Warner-D)
8/43)NM(Lujan-D)
Likely D
9/44)NH(Shaheen-D)
10/45)MN(Smith-D)
11/46)CO(Hickenlooper-D)
Lean D
12/47)MI(Peters-D)
13/48)AZ special(Kelly-D)
Tilt D
14/49)ME(Gideon-D)
15/50)NC(Cunningham-D)
16/51)MT(Bullock-D) or IA(Greenfield-D) or KS(Bollier-D vs Kobach-R) or AL(Jones-D vs Tuberville-R vs Sessions-I).