Hollywood unions have reiterated their opposition to California’s Proposition 32 and are urging members in the Golden State to vote against the campaign finance reform measure on the ballot.

Prop 32 would ban both corporate and union contributions to state and local candidates along with banning contributions by government contractors to the politicians who control contracts awarded to them and banning automatic deductions by corporations, unions and government of employees’ wages to be used for political efforts.

The unions issuing the statement include the Directors Guild of America, SAG-AFTRA, IATSE, Professional Musicians Local 47, Teamsters Local 399 and IBEW Local 40.

Proposition 32 is a sham that purports to be campaign finance reform but would have no practical effect on the millions of dollars big corporations and billionaires spend on California politics,” the unions said. “Proposition 32 will prohibit entertainment industry workers from continuing to participate in political action through their unions. The entertainment industry is critical to California’s economy, and its actors, performers, costume designers, grips, script supervisors, electricians, drivers, writers, musicians, cinematographers, directors and other professionals must have a voice on core issues that impact their jobs.”