Nope voted for Warnock (D) and Perdue (R) if you note both races are about 1% off in difference. So its very likely those voters ticked D in the first box and R in the second.
Like at this stage America is divided there is a gulf between Democrats and Republicans but you actually say I can be arsed to vote but not make a decision.
We see exactly the same phenomena here you just rarely see the data this raw by essentially running the same race, for the same job, on the same day, on the same ballot paper.