Let him make a recess appointment. He can put someone like Lawrence Tribe on the Court for the next 10 months. Although, more likely, he could just reappoint Stevens or Souter, if they’re willing.
Watch what happens with turnout in November.
A lot of damage can be done in 10 months, and since Roberts is seemingly obsessed with civility and precedent, we would be stuck with awful rulings for decades.
Turnout may not make a lot of difference. The voting machines in many locations will be programmed to register Democrat majorities no matter what the input is. George Soros counts the votes for 11 States. In local elections we are already seeing what was a widespread phenomenon in the last Presidential election, Republican votes registering as Democrat votes in many cities. And then there are the illegals who will vote. Studies have shown that 6% admit to have voted and the pressure to not permit any sort of voter ID or questioning of voters or checking to see if they have already voted will be intense. In California and Chicago illegals already vote with the blessing of the governments.