Betty McCollum, Linda Runbeck, and Tom Foley have advanced to the November general election in the race to succeed retiring Fourth District Congressman Bruce Vento. D-F-L endorsee McCollum won a hotly contested primary last night. But a couple of her party rivals are upset about negative campaigning in the primary and are not sure they'll work for McCollum. Meanwhile, Republican and Independence Party candidates see the D-F-L rift as a chance to take a seat the Democrats have held for fifty-two years. Minnesota Public Radio's William Wilcoxen reports...