Answer: specialinterest

AnswerCrossword Clue
SPECIALINTEREST

Advocacy group's cause

SPECIALINTEREST

Bonus added to a lobbyist's account?

SPECIALINTEREST

Washington group

SPECIALINTEREST
Lobbyist's client, often
SPECIALINTEREST
Lobby
SPECIALINTERESTLobbying group, e.g.
SPECIALINTERESTLobbying group e.g.