According to precedent per the 1968 election, the pick of a new Supreme Court justice is made by the next president.
That’s not a legal precedent. At best it can be described as a political precedent, but one that has no meaning.
Which the Republicans need to be shouting from the top of the hills right now.
The Republicans just gained a huge bargaining chip here, why would they fritter it away by caving in on allowing a new SC Justice to sit before the election?