The duel between Sen. Thad Cochran and challenger Chris McDaniel ends Tuesday, as Mississippi voters pickfinallya Republican U.S. Senate nominee. McDaniel inched ahead of Cochran in the June 3 primary, but fell just short of the majority needs to win outright, forcing a runoff. Since then, the two candidates have barnstormed the state in search of a few thousand more votes. The gentlemanly Cochran touts his experience, while the hard-charging McDaniel offers himself as an energetic, committed conservative. The winner of tonights runoff is widely expected to win the seat in November.