The Directors Guild of America has come out strongly against California’s Proposition 32 and is urging its members in the Golden State to vote against the campaign finance reform measure on the November ballot.

DGA president Taylor Hackford said that if Proposition 32 is passed, it would effectively prevent unions from participating in political activity in California.

“The Directors Guild of America stands together with our fellow guilds and unions at SAG-AFTRA, WGAW, IATSE and others in emphatically opposing Prop. 32 and urging our members to vote no on this deceptive and misleading effort to prevent union members from having their voices heard in Sacramento,” he said in a statement.

Opponents have asserted that the proposition — dubbed the “Paycheck Protection” initiative — is aimed at curbing the political influence of unions by the banning the orgs from donating funds to political candidates and campaigns.

The measure 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 politics.

About 60% of the DGA’s 15,000 members live in California.