Not really, if Kennedy and the 4 democrats team up on this one then that's 5 votes.
This case is aimed to give Kennedy what he asked for 13 years ago.
https://mobile.nytimes.com/2017/06/...jor-challenge-to-partisan-gerrymandering.html
In 2004, Justice Kennedy wrote in a concurring opinion on a gerrymandering case that he might consider a challenge if there were a workable standard to decide when such tactics crossed a constitutional line. But he said he had not seen such a standard.
The challengers in the new case, Gill v. Whitford, No. 16-1161, say they have found a way to distinguish the effect of partisanship from the many other factors that influence how districts are drawn.
Edit: the case where Kennedy mentioned that could be interesting reading.
https://www.law.cornell.edu/supct/html/02-1580.ZC.html Each of the 3 dissenters offered their own standard, so this could be a very interesting case from a legal perspective because even if Kennedy goes along with the theory there might be some trouble agreeing on the exact standard to use to determine what's allowed or not.