Rudolph W. Giuliani, trying to revive his stalled Republican-Liberal bid for mayor, has shaken up his campaign team and plans to hire provocative media consultant Roger Ailes for that extra punch. Ailes, who masterminded George Bush's advertising during last year's presidential campaign, originally worked for Giuliani's GOP primary opponent, cosmetics multimillionaire Ronald S. Lauder. After objecting to planned attacks on Giuliani, Ailes quit the Lauder camp in March and was paid $236,000 for two months' work. Lauder called the hiring "an unethical act" by Giuliani and "a conflict of interest" for Ailes because he had been "part of my campaign" and had access to confidential polling data. Giuliani spokesman Charles Perkins replied, "Roger Ailes was appalled by what he saw in the Lauder campaign . . . and he wanted to work for us." Giuliani said he rejected any "innuendo" about Ailes's reputation for slashing attacks. Two senior advisers to Giuliani, Washington consultant Richard Bond and communications director Morri Berman, quit their part-time posts in last week's shake-up. Bond's partner, campaign manager Russ Schriefer, will remain as a consultant. Giuliani said the three were not forced out but that he decided he needed a full-time staff. Bond, a senior Bush strategist in 1988, said he quit his part-time post because "the news cycle in a New York mayor's race is about every two hours, as opposed to the once-a-day leisurely pace of a presidential campaign." Giuliani, while still the front-runner, has reacted very strongly to his rivals' attacks and made few substantive speeches. He has also muddied his image by straddling such sensitive issues as abortion and gay rights, displeasing people on both sides. "I'm not so sure it's fair to blame Rudy's staff for his own lack of ability to cope with a tough press," said David Garth, media adviser to Mayor Edward I. Koch (D). "The question is whether Rudy is going to listen to Roger more than anyone else." Attorney Peter Powers, Giuliani's closest friend and his new campaign manager, allowed that Giuliani has had trouble communicating a positive message and has "spent too much time reacting to things."