The Communications Workers of America, which has a strong presence in New York, announced on Thursday it had endorsed Vermont Sen. Bernie Sanders’s presidential campaign.

The union is a key player in the New York Working Families Party, which earlier this week announced it had given Sanders its nod over Hillary Clinton, a former secretary of state and U.S. senator from New York.

“CWA members have made a clear choice and a bold stand in endorsing Bernie Sanders for President,” said CWA President Chris Shelton. “I am proud of our democratic process, proud of CWA members, and proud to support the candidate whose vision for America puts working families first. Our politics and economy have favored Wall Street, the wealthy and powerful for too long. CWA members, like voters across America, are saying we can no longer afford business as usual. Bernie has called for a political revolution – and that is just what Americans need today.”

The CWA endorsement came after a three-month process that include worksite meetings and an online vote by CWA members.