There's an old novel by Nevil Shute called In The Wet (https://www.amazon.com/Wet-Nevil-Shute/dp/0884113183).

A big theme in the book is that one person can have multiple votes, if they've achieved certain things. I can't remember what they all were, but things like starting a business, getting a college degree, getting married, having kids, things like that.

Nevil Shute is an author from decades ago, he wrote most of his work between the 1930's and early 1960's. His books are often really outstanding reads, I've enjoyed all of them. If you want to start with one, the best are Trustee from the Toolroom and A Town Like Alice.