Tea leaf reading from my colleague Leah Litman:

https://twitter.com/LeahLitman/status/988783108194385920

Let me lay out a marker and say that if the Chief has it, I think he’s more likely to be the sixth vote to rein in partisan gerrymandering than the fifth to kill it.

UPDATE: Another, less rosy possibility:  Maybe we get another 4-1-4 like Vieth, and Roberts is writing a Scalia-like plurality of nonjusticiability and there is no majority decision.