Senator Paul Wellstone brought his poverty tour to Minneapolis and rural Aitkin County this (last) week. The Democrat is touring pockets of poverty across the country this summer and fall. He says he wants to evoke Robert Kennedy's poverty tour of thirty years ago. Some observers think Wellstone may also be setting the stage for a try at the presidency in 2000. Minnesota Public Radio's John Biewen reports that Wellstone's campaign to shine a light on poverty is getting mixed reviews from political observers and poverty experts. When senator Robert Kennedy travelled to places like the Mississippi Delta and eastern Kentucky in 1967 and '68, he found families in shacks with no running water... and children without enough to eat. 30 years later, hun