Here's How The Supreme Court Will Function With Eight Justices Leading Up To The Election, by Zoe Tillman, BuzzFeed News, September 18, 2020.
In summary, it says the court will try hard to avoid a tie, that there are five conservative justices and three liberal justices, but Roberts isn't always a reliable conservative vote. In ordinary cases, they can postpone a decision until the ninth justice is seated. But it dodges the central question.
One particular item of note: "...there are more than 300 election-related cases pending in state and federal courts."
Roberts is compromised/blackmailed. If his handlers don’t care about a case he can vote conservative. If they care, and they absolutely would in this case, he’d side with the liberals.
He should resign.
One would hope that in such situations as we are discussing, Roberts (who seems most concerned with the image of the court), would side the the Justices who vote to resolve the issue, not with the Justices who vote to prolong it.
-PJ