2020 US Senate Election- Which US Senate seat is going to put Democrats back in the majority?

35 Democratic held US Senate seats are not up for re-election in 2020.
Democratic held US Senate seats up for re-election in 2020 that Democrats are favored to win.
36)RI(Reed-D)
37)MA(Markey-D)
38)NJ(Booker-D)
39)IL(Durbin-D)
40)DE(Coons-D
41)OR(Merkley-D)
42)VA(Warner-D)
43)NM(OPEN Udall-D)Lujan-D
44)MN(Smith-D)
45)NH(Shaheen-D)
46)MI(Peters-D)
Republican held US Senate seats up for re-election in 2020 that Democrats are favored to win
47)CO(Gardner-R)Hickenlooper-D
48)AZ special(McSally-R)Kelly-D
49)NC(Tillis-R)Cunningham-D
50) If Democrats win the 2020 US Presidential Election.
ME(Collins-R)Gideon-D
AL(Jones-D)
IA(Ernst-R)Greenfield-D
GA regular(Perdue-R)Tomlinson-D
GA special(Loeffler-R)Lieberman-D
KS(OPEN Roberts-R)Bollier-D
KY(McConnell-R)McGrath-D
SC(Graham-R)Harrison-D
51) If Trump/Pence-R wins the 2020 US Presidential Election.