Single vote ballot is not relevant to this discussion. Someone putting in a single vote ballot for Biden would not make Trump’s numbers lower than the GOP Senate candidate’s numbers. It would only raise Biden’s numbers. They would have to also vote for the GOP Senate candidate.
I think the GA Senate race is beyond the point where the outstanding ballots could put the Dem over 50%. The recent ballots have pushed it to a runoff, meaning we have two runoffs in GA. And they will decide the balance of power in the Senate, so they’re extremely important.
Perdue + the Libertarian beat Osoff by 4.2%. It will be key to get their endorsement and have them campaign for Perdue and Loeffler. Loeffler should be effective in pulling in the vote where Biden was the choice of some otherwise conservative women.