I went and looked up the requirement. It takes a majority to win otherwise the top two go to a runoff.
Here is a listing of all the candidates for Tuesday in MS if anyone is interested.
http://www.sos.ms.gov/links/elections/2014/2014%20Candidate%20Qualifying%20List.pdf
No America is not, but the United States Senate has, since its inception, been considered to be precisely that. That is why it was so outrageous when Harry Reid & other Obamanists resumed the war on unlimited debate.
William Flax