This is a special Election to fill the remainer of the term (until January 2008) for Insurance Commissoner. Donelon become Insurance Commissioner in February 2006 upon the resignation of Robert Wooley.
Since Donelon won a majority of the vote, no runoff election was held.
Source for Popular Vote data: Louisiana Secretary of State. Election Results by Parish-Official Results for Election Date: 9/30/06, Louisiana Secretary of State (http://elect.ky.gov/NR/rdonlyres/5CA45E22-0D2C-4D92-B79D-16AC4ACDF11E/0/95treasurer.txt) (accessed 14 Feb 2007)