Who votes for the Oscars, and how does it work?

A rendering of the set for the 93rd Academy Awards released in Los Angeles, California

The ballots are all in! Millions of television viewers around the globe will tune in Sunday to watch the Oscars, the glitziest night in showbiz, but most don't know how the winners are chosen. Answer: more than 9,300 people in the entertainment industry select the honourees. The number is a record high. But who are they and how did they get to become voters? Here is a look at the complex, sometimes confounding process that leads to the winners of the 23 Academy Awards: