JUNEAU -- The Senate has passed legislation aimed at tightening Alaska's campaign finance law. The measure, approved 19-0 today, requires disclosure for corporations or unions using their own money to campaign for or against candidates. It also requires disclaimers, identifying top contributors, on TV, radio and other audio ads.

The bill is in response to a recent U.S. Supreme Court decision that opened the door for freer spending by certain special-interest groups. That kind of third-party spending had been banned in Alaska and other states.