I honestly have no idea who they would vote for.
Saudis are a different type; knew a guy from Dubai, living in Prague with his wife, also from Dubai. She never wore a covering or headscarf, drove, went out with her lady friends. About the only difference between Mahmoud and Khadija from everyone else was they didn’t drink, and didn’t eat pork. Oh yeah, they were spectacularly rich, too! His dad’s a sheik if I recall correctly. They were westernized. They both spoke excellent Czech, too, far better than I can muster.
Needless to say, I don’t see that happening in the Kingdom (acting like Westerners), to be honest. At least, not for the next 600 years or so. But then again, my friends were from Dubai, not the KSA.