An ambitious attempt to effectively bar attack ads by outside groups in the contentious U.S. Senate race in Massachusetts is showing signs of working, at least so far.
Sen. Scott Brown (R-Mass.) this week agreed to pay a penalty for radio and print ads run by the American Petroleum Institute urging people to contact Brown and ask him to vote against raising taxes on energy firms.
The Influence Industry: Pact on third-party ads seems to be working in Massachusetts
