Candidates for the U.S. Senate seat left vacant by the death of Sen. Edward M. Kennedy, D-Mass., from the left, Republican candidate Scott Brown, Democratic candidate Martha Coakley, and Joseph L. Kennedy, a Libertarian candidate running as an independent and who is no relation to the late senator, make last minute preparations before a debate is taped at the WBZ-TV studios in Boston, Tuesday, Dec. 22, 2009.
(AP Photo/Steven Senne)