Hillary Clinton Hillary Diane Rodham ClintonSanders: 'I fully expect' fair treatment by DNC in 2020 after 'not quite even handed' 2016 primary Sanders: 'Damn right' I'll make the large corporations pay 'fair share of taxes' Former Sanders campaign spokesman: Clinton staff are 'biggest a--holes in American politics' MORE is cornering the union vote ahead of the 2016 presidential election.

The Democratic presidential front-runner now has at least two dozen union endorsements, according to her campaign, after the Office and Professional Employees International Union (OPEIU) backed her on Wednesday.

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The OPEIU represents 103,000 workers across North America. It called Clinton “by far the most qualified to lead our nation.”

“Our country’s chief executive should be someone who is experienced in both domestic and foreign affairs and someone who understands and prioritizes the needs of working families,” OPEIU President Richard Lanigan said in a statement. “Hillary Clinton has this experience, and [we have] determined that of all the candidates, she is by far the most qualified to lead our nation.

“We urge our members to make sure to vote in all primaries and to work as volunteers on her historic campaign to get out the vote,” he added.

The most important campaign issues for OPEIU include the minimum wage, income inequality and the protection of workers’ right to organize, the union said.