Former Mayor Wellington Webb formally announced his candidacy Thursday to become chairman of the Democratic National Committee (news - web sites). Webb's interest in the job was widely known; he made a pitch to the committee on Dec. 10 in Orlando, Fla. "I am running because I believe this historic election for chair will determine the future of our party," Webb said. Webb was mayor from 1991 to 2003 after serving as a state legislator and Denver city auditor. Others interested in the Democratic chairmanship include former presidential candidate Howard Dean (news - web sites); former Michigan Gov. Jim Blanchard;...