What is another word for "bagman"?

Roget's Thesaurus (1911) lists these synonyms for "bagman": advocate, agent, ambassador, applicant, arbitrator, aspirant, attache, attorney, auctioneer, bailiff, beggar, bidder, broker, bum, business, cadger, candidate, canvasser, case, charge, child, claimant, clerk, client, commercial, commissary, commission, commissionaire, commissioner, committee, competitor, consignee, consul, core, corps, correspondent, curator, delegate, deputy, diplomat.