Because California voters are rabidly pro-choice, Republicans are left out in the cold. The Republican base is pro-life, and wants Republican politicians to embrace that position. It’s a no win situation.
But if Kennedy retires, Roe v. Wade will be overturned, and each state will be free to adopt its own laws on abortion. In California, I expect the pro-choice position will be enshrined in the state constitution. As such, it’s not an issue. It’s settled. A candidate’s personal position is irrelevant, unless they’re foolish enough to favor taking it out of the constitution.
That’s the theory, anyway. In California, that’s all Republicans have got.