deny everything, launch counterattack. >> reporter: from faking campaign contributions to socialists to planting other false information, roger stone wouldn't miss a creative trick in trying to sabotage his candidate's opoints. after working on ronald reagan's campaign, he teamed up with chairman paul manafort in a lobbying firm, which represented murderous dictators, among others. at times, stone's personal life derailed his career, if only temporarily. he had to leave bob deal's 1996 campaign when a tabloid published a story on stone and his wife being swingers. >> roger is a very unique individual. he is a body building, pot smoking, dandy swinger. he very much is a libertarian who embraces he donism. >> reporter: now, as roger stone again vows his loyalty to president trump, critics say he symbolizes a strong current in the underside of politics.