This editorial discusses San Francisco’s public financing system.

In 2000, San Francisco voters approved a system of public financing of campaigns for the Board of Supervisors, which in 2006 was expanded to the mayoral race. By eliminating the need for candidates to raise large amounts of private money, the program has been extremely successful at helping sever the link between big money and political decisions. But now this flagship program is threatened: Mayor Gavin Newsom is proposing to raid several million dollars from the public campaign fund.