MANKATO-October 17, 2012-(KMKO)-Greater Mankato Growth will host a candidate forum tonight.  The event will feature candidates for the Blue Earth County Commission.  District four commissioner Will Purvis, District three incumbent Kip Bruender and District three candidates Mark Piepho and Caroline Wood will answer questions at the forum.  It begins at 7:00 pm at the Americinn Hotel and Conference Center in Mankato.