Democrats are 55k votes away from winning statewide. That can be achieved almost by new registrations alone. Perdue doesn't even have enough of a brand to be as formidable as some people seem to think he is. You have a freshman Senator with no real profile up for re-election in a state that is slipping away from his party.
Tomlinson & Ossoff do not have the same appeal to Voters that Stacey Abrams or Michelle Nunn had in 2018 and 2014. Simple is that!
And by the way I do expect a lot of Split Ticket Voting in States with competitive Senate Races. American Voters might throw out Trump BUT they might also want to have a check on the new Democratic President if that person wins (whomever his Name is)
History is against Democrats winning the Presidency and the Senate. The last three times the Upper Chamber flipped was in a MidTerm (1994, 2006, 2014). The Alabama Senate Race looms large over any Democratic Senate Control.
History is never a good indicator of what will happen in future elections, because each cycle is different.
So California is a tossup in 2020?
One of the most mind-numbingly stupid things I've ever read on this forum.