I believe the upcoming Supreme Court battle is important to Jones if he wants to have a chance at reelection. IMO, anything short of a Yes vote is political suicide.
That would abandon the very voters who put him there, the black voters who came out at presidential levels to support him.
That is true but white turnout will be up A LOT over 2017 due to it being a presidential year. 2017 was also an incredibly unique situation.
He couldn't win white voters over ROY FREAKING MOORE in 2017, he won't be able to win them in 2020. He needs to double down on his base and hope the Republicans put up another dreadful candidate. Pandering to conservative whites won't win him any votes, but will cost him many.