Presidential hopeful Bernie Sanders won the endorsement of a national nurses union Monday, in a sign of the divide among organized labor groups over the Democratic race.

National Nurses United, which represents 185,000 nurses across the country, announced its pick at an event in Oakland attend by Sanders, the independent senator from Vermont who has emerged as Hillary Rodham Clinton’s chief rival for the Democratic nomination.

“He’s unequivocal on the issues,” DeMoro said, adding that on several of the union's priorities Clinton “fell very short.”

The union said its announcement was attended by several hundred nurses at its Oakland headquarters and live-streamed to 34 watch parties in 14 states.