September 6, 2004 -- WASHINGTON — The long knives are out for Democrat John Kerry's campaign manager, Mary Beth Cahill, as infighting rages while his slumping campaign struggles to come back against President Bush. "You'd think they could find a man to throw overboard one of these days," zinged Republican strategist Mary Matalin, a former aide to Vice President Dick Cheney on NBC's "Meet the Press." She said Democrats blamed 1988 loser Michael Dukakis' stumbles on campaign manager Susan Estrich and Al Gore's 2000 fumbles on campaign chief Donna Brazile, and "now they're trying to blame poor Mary Beth Cahill"...