Despite widespread assertions that Missouri Republican Rep. W. Todd Akin's abortion remarks have made him a heavy underdog in the state's U.S. Senate race, a Democratic-leaning polling firm released a poll Thursday showing him in a virtual dead heat with incumbent Democratic Sen. Claire McCaskill. According to the survey by Public Policy Polling, Mrs. McCaskill has support from 45 percent of likely Missouri voters compared with 44 percent for Mr. Akin...