Most to Least Vulnerable Democratic and Republican US Senate seats up in 2020.
Democratic
Lean R
1)AL(Jones-D)/(Sessions-R)31
Lean D
2)MI(Peters-D) 36
Likely D
3)NH(Shaheen-D)37
4)MN(Smith-D)38
Safe D
5)NM(OPEN Udall-D)/(Lujan-D)39
6)VA(Warner-D)40
7)OR(Merkley-D)41
8)IL(Durbin-D)42
9)DE(Coons-D)43
10)NJ(Booker-D)44
11)RI(Reed-D)45
12)MA(Markey-D)46
Republican
Lean D
1)CO(Gardner-R)/(Hickenlooper-D)47
2)AZ special(McSally-R/(Kelly-D)48
Tilt D
3)NC(Tillis-R)/(Cunningham-D)49
4)ME(Collins-R)/(Gideon-D)50
Tilt R
5)GA special(Loeffler-R)32
6)GA regular(Perdue-R)33
7)IA(Ernst-R)34
Lean R
8)KS(OPEN- Roberts-R)/(Marshall-R)35
9)TX(Cornyn-R) 36
Likely R
10)KY(McConnell-R)37
11)MS(Hyde Smith-R)38
12)MT(Daines-R)39
13)SC(Graham-R)40
14)TN(OPEN Alexander-R)/(Hagerty-R)41
15)AK(Sullivan-R)42
Safe R
16)LA(Cassidy-R)43
17)NE(Sasse-R)44
18)SD(Rounds-R)45
19)WV(Moore Capito-R)46
20)ID(Risch-R)47
21)OK(OPEN- Inhofe-R)/(Pruitt-R)48
22)WY(OPEN- Enzi-R)/(Lummis-R)49
23)AR(Cotton-R)50