Stallone was one of the biggest action stars of his day. His major competitor was Arnold Schwarzenegger. Schwarzenegger had political ambitions, and went on to become the Governor of California. That inspires the question of whether or not Stallone would be up for running for political office (possibly replacing Arnie in an alternate world), and if so, his prospects and what he'd do and what kind of politician he would be. He is a Republican, and I have seen him say he loved Ronald Reagan as president.
A major thing here is whether or not Stallone would actually care enough to become a politician, because I dislike the trope of anybody running for political office when not everyone wants to, and if he never wanted to, then that ends the issue here.