2020 US Senate Election- Democrats guide to a majority runs through AZ,CO,GA,IA,and NC.

AZ,CO,GA,IA,and NC are battleground States at the Presidential and Senate level.
The Republican incumbent in AZ lost a US Senate Race in AZ last year for the other AZ US Senate Seat but was later appointed the other AZ US Senate Seat.
The Republican incumbents in CO and NC were first elected in the 2014 Republican wave by a narrow margin.
The Republican incumbents in GA and IA were first elected in the 2014 Republican wave by a high single digit margin.

Democrats are going to hold onto every Democratic held US Senate seat up in 2020 except AL(Jones-D).-1D 46D
Democrats are going to win the 2020 US Presidential Election with a Harris-CA/Brown-OH ticket.-1D 45D
Democrats need to win at least 5 Republican held seats with VP Sherrod Brown-D breaking the tie vote.
AZ(McSally-R) Kelly-D
CO(Gardner-R) Perlmutter-D if he decides to run, if not it will be Duran-D is she decides to run or Johnston-D or Romanoff-D. If Gardner-R is Heller-R(2018 NV US Senate Race) then Neguse-D or Crow-D should run and become Rosen(D-NV).
GA(Perdue-R) Abrams-D
IA(Ernst-R) Finkenauer-D or Axne-D
NC(Tillis-R) Stein-D or Foxx-D