Former Vermont Gov. Howard Dean, whose high-flying presidential campaign crashed a year ago in the political chill of Iowa, announced Tuesday that he will run for the chairmanship of the Democratic National Committee. In a statement on his Internet blog titled "I'm running," Dean said that the Democratic Party must cultivate its grassroots and contest every race at every level. "We will only win when we show up and fight for the issues important to all of us," Dean said in the statement. He said that the Democrats must become the party of reform. "The Democratic Party will not win...