Workers in Alabama are staging a fourth attempt to kick the United Auto Workers (UAW) out of their plant following claims that stuffed ballot boxes derailed their last vote.

Employees at the NTN-Bower Corporation, a ball bearings manufacturer, have unsuccessfully tried to boot the labor giant out of their factory for two years.

Workers voted to decertify the UAW in an earlier election, but an Obama-appointed National Labor Relations Board (NLRB) panel threw out the election.

Another election was held in January of this year. The UAW prevailed, but it was later revealed that 148 ballots were cast—eight more than the entire workforce. Employees convinced the NLRB to throw out those results with the help of the National Right to Work Foundation.

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