In an admittedly not comprehensive search for material to uphold the charge of "stealth character assassin, working as a deadly duo..."this is the worst stuff I found. These are things I remember from the day myself. If anyone has specific information that confirms the charge I would love to hear it. Truly.

http://en.wikipedia.org/wiki/Bill_Moyers

"After the resignation of White House Chief of Staff Walter Jenkins because of a sexual misdemeanor in the run up to the 1964 election, President Lyndon B. Johnson, alarmed that the opposition was framing the issue as a security breach, ordered Moyers to request FBI name checks on 15 members of Goldwater's staff to find "derogatory" material on their personal lives. Goldwater himself only referred to the Jenkins incident off the record. The Church Committee stated in 1975 that "Moyers has publicly recounted his role in the incident, and his account is confirmed by FBI documents." In 2005, Laurence Silberman claimed that Moyers denied writing the memo in a 1975 phone call. Moyers said he had a different recollection of the telephone conversation.

"Moyers also sought information from the FBI on the sexual preferences of White House staff members, most notably Jack Valenti. Moyers indicated his memory was unclear on why Johnson directed him to request such information, "but that he may have been simply looking for details of allegations first brought to the president by Hoover."

"Moyers approved (but had nothing to do with the production) of the infamous "Daisy Ad" against Barry Goldwater in the 1964 presidential campaign. That ad is regarded to be the starting point of the modern-day harshly negative campaign ad."

"Moyers helped to write the Democratic party platform of 1964, which had a strong commitment to civil rights. As Johnson's liaison with the advertising firm that was preparing television advertising for the campaign, Moyers ordered a strong attack on Barry Goldwater. Moreover, he approved of the famous "Daisy" ad, which showed a young girl counting the petals on a daisy, then cut to a countdown to a nuclear explosion with a voiceover of Johnson speaking of the importance of peace. The ad evoked protests from the Goldwater campaign and was aired only once. Though it never explicitly mentioned Goldwater or the Republicans, the ad was a highly effective evocation of Goldwater's reputation for nuclear bellicosity."

http://www.answers.com/topic/bill-moyers


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"Although Tuck had irritated Nixon during his previous campaigns, he worked especially hard to torment the President in his final run for re-election. His stunts were amusing, especially when pulled on the serious Nixon. They caught the imagination of the public, such that verbal descriptions of some stunts were later embellished upon.

"One stunt Tuck pulled was when he arranged for Nixon to make a campaign speech at a large auditorium for Republican supporters. Of course Nixon was expecting a good turnout, but when he arrived, there were only a handful of people there to hear him speak! Tuck had made sure that nobody in the city knew Nixon was to be there. You can imagine the shock to Nixon that only a few people had bothered to come to hear him speak."

"Another stunt Tuck orchestrated was when Nixon was campaigning via train, making "whistle stop" speeches in various communities. Tuck had dressed as a rail employee and when Nixon was in the middle of his speech, Tuck signaled the engineer to start the train. It pulled away, while Nixon was still talking to the audience."

"Such stunts were certainly humorous—especially to the Democrats, who probably financed them. On the other hand, Nixon and his people felt that if the Democrats can play dirty tricks, the Republicans could also do the same."
.....

"It is interesting that although the political tricks of Dick Tuck were well publicized in the press, they were never taken seriously or are even considered part of the political history of that era. It is my contention that Dick Tuck's tricks helped to bring on Watergate and the demise of Richard Nixon."

http://www.school-for-champions.com/history/did_dick_tuck_cause_watergate.htm