As the "card check" portion of the Employee Free Choice Act (EFCA) remains in limbo, one internal poll by an anti-EFCA group claims the bill's other key provision is deeply unpopular.

60 percent of voters nationwide oppose the binding arbitration portion of EFCA -- including 43 percent of the country that strongly opposes it, according to internal polling done by one of the groups working against EFCA.

The arbitration provision would refer an employer and union to a federal mediator after 90 days of collective bargaining and invoke arbitration after 30 additional days, the decision from which would be binding for two years. Both parties could agree to delay those deadlines.

The fate of EFCA, a priority for organized labor groups, has been seen as in flux after varying reports emerged in recent days about the fate of the controversial "card check" provision. The New York Times had reported that the provision had been removed as part of a compromise, though some labor officials have walked back on those rumors.

Of note, the anti-EFCA polling alleges that 63 percent of union households oppose the binding arbitration provision, which makes up the other key component of the bill.

More broadly, the polling says that 76 percent of Americans believe say "giving government arbitrators the right to set the wages and benefits for workers is a bad idea."