The National Union Of Healthcare Workers, a renegade splinter union formed in January when the Service Employees International Union ousted the leadership of its 120,000-member United Healthcare West affiliate, claims to be near stealing away 50,000 workers at Kaiser Permanente.The new union is holding a press conference at 11 a.m. today to announced that more than half the workers at Kaiser Permanente have signed petitions expressing their wish to leave SEIU and join the NUHW. Under federa