Barack Obama says he supports the public financing of political campaigns, but today he became the first major presidential candidate since 1976 to reject public money. John McCain's campaign says Obama has broken a promise. Because McCain will accept public money, he'll be limited to spending $84 million. Obama raised $95 million in February and March alone. Massie Ritsch is communications director for the Center for Responsive Politics, which tracks campaign spending and its effect on elections and public policy.