David Mark is the former editor-in-chief of Politix, published by Topix, the largest local forum site in the U.S. Prior to heading up Silicon Valley-based Politix, David enjoyed a varied career covering politics and government in Washington, D.C., where he visits frequently for work and pleasure. For six years, David was a senior editor at Politico. He was previously editor in chief of Campaigns & Elections, which covers the business and trends of politics. Earlier in his career David was a reporter on Capitol Hill.