I am no legal expert, but my family lost a fortune when we appealed a lawsuit to our State Supreme Court. We were 100% in the right and had no doubt that we would win. Unfortunately, the decision came down exactly along political lines and there were more liberals than conservatives. Most judges decide based on their political orientation and then construct a legal justification to back it up. In our case the liberal justices actually added an untrue narrative from the state that was never even introduced in court hearings. It was a totally bogus ruling, but the states primary tactic all along was to eventually run us out of money.
So I don’t think that it would be a unanimous decision in the Supreme Court. I think that it will deadlock and the 9th Circuits decision will then stand. My guess is that the 9th circuit will rule against Cruz 2 to 1. But we will have to see. Their determination will be timed to cause the maximum disruption to the Republican contest.