Liberals want to change things for the better, conservatives want to make things go back to the way they were (ostensibly for the better). Most artists want to make the world a better place, ergo most are liberals. But there are always exceptions that prove the rule, like say Alan Moore.
If you picked a job that employs people who want to change things back to the way they used to be, like say a priest or coal miner, you'd find a lot more conservatives.
https://www.washingtonpost.com/news/...ly-a-democrat/