A pair of labor unions on Friday announced they are withdrawing from the Working Families Party a day before Democratic gubernatorial candidate Cynthia Nixon is potentially endorsed by the ballot line.

The two unions, SEIU 32BJ and the Communications Workers of America, are the latest unions to depart from the Working Families Party. The development comes as labor leaders allied with Gov. Andrew Cuomo are considering forming their own ballot line to rival the WFP this fall.

“The Working Families Party was created by labor unions, community organizations and progressive activists to advance an agenda and elect candidates who improve the lives of working people. From raising the minimum wage to $15 an hour, to passing the strongest paid family leave program in the country, Governor Cuomo has delivered on that agenda,” said 32BJ President Héctor Figueroa and Dennis Trainor, the vice president of CWA Local 1, in a joint statement issued Friday afternoon.

“We therefore fundamentally believe that endorsing Governor Cuomo is the most effective way to put the interest of working families first. The latest developments show that the current leadership of the WFP disagrees with that approach, and we have been unable to convince them otherwise.”

Cuomo is running for a third term and faces Nixon, an actress and public education advocate, in a Democratic primary. Several unions have previously departed the WFP while disagreeing over tactics, including the United Federation of Teachers.

The split is part of a broader dispute within the WFP between its labor union founders and activist groups that have largely been funded by unions to push issues.

WFP State Director Bill Lipton in a statement accused Cuomo of “threatening people” and actively seeking to yank funding from the advocacy organizations.

“Several times, he said ‘if unions or anyone give money to any of these groups, they can lose my number.’ Our friends in labor are in a tight spot and we respect their decision,” Lipton said. “These community groups, which represent tens of thousands of working families, have been at the forefront of the Fight for $15, worker and immigrant rights, affordable housing, criminal justice reform, climate justice and more. The Working Families Party has always fought for the rights of unions and for all working families and that will never change. We will stand up for workers, tenants, commuters, home owners, immigrants, people of color, students — and every other New Yorker who needs a voice. We will continue to fight for a New York that works for all working families.”

The WFP is expected to meet in Albany on Saturday to consider its endorsement in the gubernatorial race.