2020 US Senate Election- Democrats guide to a majority.(51 seats).

Democrats will lose AL(Jones-D) to Anyone But Moore-R but will definetly pick up CO(Gardner-R) with any Democratic candidate(Duran-D,Johnston-D,or Romanoff-D etc). 47D 53R.
Democrats will pick up AZ special(McSally-R) and NC(Tillis-R) if the 2020 Democratic US Presidential Nominee wins the popular vote in AZ and NC or loses AZ and NC by a narrow margin. 49D 51R.
Democrats will pick up ME(Collins-R) if Collins-R retires or loses in the Republican Primary or Democrats nominate a Top Tier Candidate. 50D 50R.
The 51st seat Democratic US Senate seat will be MT(Daines-R) with Bullock-D
Democrats will definetly regain control of the US Senate in 2022. In 2022 Democrats will hold onto every Democratic held seat up in 2022(CO-Bennet-D,NV-Cortez Masto-D,and NH-Hassan-D) and pick up IA(OPEN Grassley-R), NC(OPEN Burr-R),PA(Toomey-R) and WI(OPEN Johnson-R)