I would like to believe that the justices are impartial and do not make their decisions based on partisan preferences.
But in practice, it does not happen that way, and they always find a way, deep in the recesses of their minds, to "argue" their way toward a decision that conforms to the leanings they have been known to take, primarily on a partisan basis.
Partisanship might tilt a decision in a very narrow scenario
However feel free to explain this decision
https://www.opb.org/article/2020/08/11/oregon-redistricting-ballot-measure-supreme-court-stay/