The National Labor Relations Board has recommended the cancellation of the results of an election last year between two unions to represent 43,000 employees in California’s largest hospital chain, Kaiser Permanente. The giant Service Employees International Union, or SEIU, beat out the much smaller breakaway National Union of Health Workers, or NUHW, in a bitterly contest race. But a National Labor Relations Board judge has now ruled SEIU was guilty of misconduct and collusion with Kaiser Permanente to influence the vote’s outcome.