Gubernatorial candidates Mike Freeman and Norm Coleman added to their victories in district convention straw polls over the weekend. Democrat Freeman overwhelmingly won the informal ballot in the Eighth District in Northern Minnesota, while D-F-L challenger Skip Humphrey won in the Seventh. Republican Norm Coleman continued to chalk up straw poll wins with the metro-area Fourth and Sixth Districts, but Joanne Benson and Allen Quist each took outstate wins. Minnesota Public Radio's Art Hughes has this wrap-up of the weekend's district conventions. (ANNCR TAG: Minnesota Public Radio's Amy Radil and Mark Steil also contributed to this report) Mike Freeman's early union endorsements and years of wooing party insiders helped propel him to a commanding straw poll victor