text: what industries have the most powerful lobby groups in washington. list most powerful to least.? how much money do they spend on individual legislators and political parties? well.. sounds like yu are trying to answer something for homework...  i'm not going to look into the specifics on how much is spent, you should do that...  but from general consensus, your most powerful lobbies are:  tobacco nra aarp israeli government lobby group oil industry insurance company lobby naacp afl cio