US Senate seats Democrats are definitely gonna win in 2020.

Safe D
36)RI(Reed-D)
37)MA(Markey-D)
38)OR(Merkley-D)
39)IL(Durbin-D)
40)DE(Coons-D)
41)NJ(Booker-D)
42)VA(Warner-D)
Likely D
43)NH(Shaheen-D)
44)NM(Lujan-D)
45)MN(Smith-D)
Lean D
46)MI(Peters-D)
47)CO(Hickenlooper-D)
48)AZ special(Kelly-D)
Tilt D
49)ME(Gideon-D)
50)NC(Cunningham-D)
51)IA(Greenfield-D)
US Senate seats that could go either way in 2020.
MT(Bullock-D vs Daines-R)52
GA regular(Ossoff-D vs Perdue-R)53
SC(Harrison-D vs Graham-D)54
KS(Bollier-D vs Marshall-R)55
GA special(Warnock-D vs Loeffler/Collins-R)1/2021 runoff.56
AK(Gross-I/D vs Sullivan-R)57
TX(Hegar-D vs Cornyn-R)58

To get to 60 seats
AL(Jones-D) and KY(McGrath-D)
AL(Jones-D and MS(Espy-D)
KY(McGrath-D) and MS(Espy-D)