Conversation so far:
Who are the Judges of RuPaul's Drag Race?
The judges are RuPaul, Merle Ginsberg, Santino Rice, Michelle Visage, Billy Brasfield, Ross Mathews, and Carson Kressley.
Do the judges of RuPaul's Drag Race change every season?
Some of the judges change and some are constant.

Question: What do the judges do
Self-contained rewrite: What do the judges of RuPaul's Drag Race do?