I have a hypothetical question related to the workings of the electoral college that I would like to explore the answer to but I do not know if hypotheticals are okay here. What is the policy?
A hypothetical based on the current mechanics is entirely OK. E.g. what happens if Trump and Clinton both get 269 electoral college votes is on-topic. The biggest problem that I've seen with hypotheticals is when they invite speculation from answers. Speculating in a question that can have concrete, objective answers is fine.
All that said, I personally would want to see the question before making a judgment. I don't think that a hard and fast rule like hypotheticals are always OK or never OK would really work.