A "reform caucus" refers to a group within a larger organization or institution that advocates for change and improvements to existing policies or practices. They work together to bring about meaningful and positive reforms. Full definition
This is the first time the entire reform caucus, as they are known, revealed their full membership. (observer.com)
He co-founded NewTLA, a political reform caucus within UTLA's governing body. (pahara.org)
To boot, he was one of the first prominent voices to call for Mr. Silver to resign, which will be a significant selling point to the body's growing reform caucus. (observer.com)