Third, fourth and fifth-party candidates for U.S. Senate had their say in a half-hour debate Monday on Twin Cities public television. Senate candidates from the Grassroots, Socialist workers, Independence, Constitution and Libertarian parties took audience questions and probed one anothers' views. Issues ranged from eliminating the federal income tax to forming a "workers' government" and cutting back corporate welfare. On the international front, the candidates showed greater unity in wanting the U.S. OUT of most foreign affairs. Minnesota Public Radio's Amy Radil reports.