Former House Speaker Newt Gingrich (R-Ga.) blasted the Employee Free Choice Act (EFCA, or "card check") in a nationally-distributed radio spot produced by an anti-EFCA organization.

"It is entirely possible workers could end up in a union they didn't get to vote on, abiding by a contract they also didn't vote on," Gingrich says in a radio actuality produced by the Workforce Fairness Institute (WFI). "I believe that the Employee 'Forced' Choice Act is the greatest threat to the workplace in American history."

Radio actualities are sound bites sent out to radio stations in hopes the sound bites will be used. WFI is a group organized to help prevent passage of EFCA, and said to be backed by several corporate interests.

The Gingrich actuality has been sent out to radio stations nationwide.

Listen to the spot below: