2020 US Senate Races the Democrats will win in order to regain control of the US Senate in 2020.

Democrats will definitely win every Democratic held US Senate seat up for re-election in 2020 except AL(Jones-D).
1/36)RI(Reed-D)
2/37)MA(Markey-D or 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)
9/44)NH(Shaheen-D)
10/45)MN(Smith-D)
11/46)MI(Peters-D)
Democrats will win at least 4 Republican held US Senate seat up for re-election in 2020.
12/47)CO(Gardner-R vs Hickenlooper-D)
13/48)AZ special(McSally-R vs Kelly-D)
14/49)NC(Tillis-R vs Cunningham-D)
15/50)IA(Ernst-R vs Greenfield-D)
16/51)ME(Collins-R vs Gideon-D)
17/52)MT(Daines-R vs Bullock-D)
18/53)KS(Kobach-R vs Bollier-D)