Looks like the Senate seats in CO and NC will go D as well. There will be very little ticket splitting this year.
Gardner has been DOA for over two years, and he was never going to run far ahead of Trump. The 2018 midterms showed that ticket splitting is virtually dead in Colorado. And Cunningham is still the favorite in North Carolina. Voters don't care about his sexual escapades and are more concerned about handing an electoral rebuke to Republicans. But you're right about the ticket splitting effect. I don't think it will be as extreme as in 2016, when no state split tickets for Senator and President for the first time in almost a hundred years. Bullock, Greenfield, Bollier, Gross, Harrison, and either Ossoff or Warnock are Democratic Senatorial candidates who can win with Trump carrying their states. The same probably could have been said of Susan Collins in Maine until fairly recently (that she could win with Biden carrying her state), but at this point, I believe that she is going to lose.