Would a Celebrity’s early careers(mistakes) affect their new later careers?

For example if like Britney Spears grew mature in 20 years (this is hypothetic yes its a snowball’s chance in heaven) and decided to become a politician, would her childish acts in her teens and twenties and her mistakes and scandals hurt her, even if she said she matured? I know no one expects a singer to be a politician, but if they decide to change their career and become serious, would people hate them? I mean Arnold Schwarzenegger did that. He was a bodybuilding, then he became an actor, and now he’s a governor. His fame did help him.