The likely number of US Senate seats that the Democrats will have after 2022 is 53

[nkpolitics1212]

37)HI(Schatz-D) unopposed or no GOP opponent.
38)CA(Padilla-D) vs Horton-D or Heng-R.
39)VT(Leahy-D, Welch-D, Donovan-D, or Gray-D)
40)MD(Van Hollen-D)
41)NY(Schumer-D)
42)CT(Blumenthal-D)
43)WA(Murray-D)
44)IL(Duckworth-D)
45)OR(Wyden-D)
46)CO(Bennet-D)
47)AZ(Kelly-D)
48)NV(Cortez Masto-D)
49)PA(Fetterman-D or Lamb-D)
50)NH(Hassan-D) vs Sununu-R
51)GA(Warnock-D)
52)WI(Barnes-D or Godlewski-D)
53)NC(Beasley-D or Jackson-D) vs McCrory-R

[Rollo]

1. Great news, but what's the evidence to support it?

Links, etc...