Article on campaign financing, with a focus on 527s, non-profit political advo

Article on campaign financing, with a focus on 527s, non-profit political advocacy groups that are allowed to promote different political issues, as long as they are not explicitly supporting one candidate. With an interview in question-and-answer format with Hannah Pingree (D-North Haven), who works with Moveon.org and runs the Maine Women\u27s Leadership political action committee