A newly formed political committee that is not required to immediately disclose its donors has spent $480,000 on a major television advertising buy days before the mayoral election on behalf of state Representative Martin J. Walsh, according to a report filed this week with the state.
The political action committee, One Boston, is not obliged to identify its financial backers until January, after voters cast ballots in this Tuesday’s election.
The surge of outside money in the waning days of the campaign underscores the role that political committees are playing in the first wide-open mayoral race in a generation in Boston. Walsh’s opponent, Councilor at Large John R. Connolly, has also benefited from such money, but at much lower levels. Outside groups have spent three times more on Walsh than on Connolly. Full story for BostonGlobe.com subscribers.
Joshua Miller of the Globe staff contributed to this report. Andrew Ryan can be reached at firstname.lastname@example.org.