Judge blocks more Montana campaign finance laws

HELENA — A federal judge on Friday blocked more Montana campaign finance laws amid an ongoing battle over political spending restrictions, and ruled that corporations are indeed allowed to donate to some political action committees.

Montana officials are fighting multiple attacks aimed at undoing state restrictions. The legal battles follow a 2010 U.S. Supreme Court decision known as Citizens United that grants free-speech rights to corporations.

U.S. District Judge Charles Lovell struck down a state ban on knowingly false statements in political attacks in election materials, a law aimed at p...