ST. LOUIS - Winning votes in the Midwest will be crucial to Democratic hopes to regain power in Washington in November, party Chairman Howard Dean told about 400 young people at the College Democrats National Convention on Thursday. "We cannot be a national party unless we have the courage to ask every single American for their vote," Dean said. He said holding the convention in Missouri dovetails with his "50-state plan" to build Democratic support in states that have voted Republican over the last six years. Dean said the Democratic Party plans to knock on 2 million doors before November's...