Based on polling and demographic data for early voting in several states, I can make some predictions for statewide senator and governor races. I evaluate trends between 2018 midterm voting compared to 2022 data. It is certainly not an exact science:
Florida: DeSantis and Rubio will win handily
North Carolina: Bud
Georgia: Kemp and Walker in a December Special Election since no one will get 50% of the vote.
Nevada: Laxalt and Lombardo
Pennsylvania: Fetterman and Shapiro
Arizona: Lake and Kelly
New Mexico: Grisham
I do not have any demographic data for Ohio, New York, Minnesota, Connecticut, and Texas, but I think Vance, Hochul, Walz, Blumenthal, and Abbott win respectively. They are well ahead in most polls.
My best guess of some races that are dead heats in the polls that I have no demographic data:
Wisconsin: Johnson and Michaels
New Hampshire: Bolic
Republicans will win at least 240 of the 435 races.