NPR's David Welna reports that numerous questions remain about the Senate race in Missouri. Missouri's Governor Mel Carnahan, died two weeks ago in a plane crash. Carnahan was the democratic opponent of Senator John Ashcroft. Carnahan's death, however, did not remove is name from the ballot, and now he's actually leading in the polls. Many are wondering what will happen if the state elects the deceased governor to the U.S. Senate.