The Building Industry Association of Washington is facing a Washington Public Disclosure finding that the group violated campaign finance law.

A subsidiary of the Building Industry Association of Washington violated state campaign-finance laws, the state Public Disclosure Commission has ruled.

The commission will pass its findings on to the state Attorney General’s Office, which will decide whether to prosecute.

The decision by the Public Disclosure Commission (PDC) is a blow to the builders association, which stirred controversy in recent months with an ad campaign aimed at derailing Democratic Gov. Christine Gregoire’s bid for re-election.