The head of the state's most powerful health care union is stepping aside in a long-simmering leadership struggle.
Sal Rosselli will not seek re-election as president of the SEIU California State Council, which oversees local chapters of the Service Employees International Union.
He says a new election process started by national SEIU President Andy Stern is unfair.
Rosselli told Stern in a letter on Sunday that the process is dividing the union at a crucial moment, as it negotiates health care with the governor.
Stern has been more supportive of Schwarzenegger's efforts than the California SEIU.
Rosselli remains president of the 135,000-member United Healthcare Workers West.