In a Democratic primary match in PA(Fetterman vs Kenyatta) Fetterman is favored to win the Democratic nomination and defeat whoever is the Republican nominee.
In WI- Nelson-D is currently the frontrunner because non of the top tier candidates(Barnes-D,Godlewski-D,Kaul-D, or Kind-D) are in the race. If one of them run, they are favored to be the Democratic nomination.
Another race that is similar to WI but switch parties is NH.
Bolduc-R is the only Republican that currently in the race against Hassan-D. Hassan-D will crush Bolduc-R.
Hassan-D will also crush Lewandowski-R. In a matchup between Hassan-D vs Ayotte-R, Hassan-D defeats Ayotte-R by a narrow to high single digit margin. If Sununu-R is the Republican nominee, he either loses to Hassan-D or defeats Hassan-D by a narrow margin.
Right now, Democrats are currently favored to win-
PA(Fetterman-D is currently favored to win the Democratic nomination and general election.)
GA(Warnock-D is favored to defeat Collins-R or Loeffler-R)
AZ(Kelly-D is favored to defeat Biggs-R, Brnovich-R, Ward-R or Yee-R.)
NV(Cortez Masto-D is favored to defeat Amodei-R, Hutchison-R Laxalt-R, or Sandoval-R)
CO(Bennet-D vs Glenn-R or Neville-R)
IL(Duckworth-D)
OR(Wyden-D vs Rae Perkins-R)
VT(Leahy-D or the non Leahy-D Democratic nominee defeats Scott-R or the non Scott-R Republican nominee)
CT(Blumenthal-D)
MD(Van Hollen-D)
WA(Murray-D)
CA(Padilla-D)
NY(Schumer-D)
HI(Schatz-D)