After electing Reform Party candidate and former pro wrestler Jesse Ventura as their governor, Minnesotans suddenly find themselves having to explain to the outside world what the front page of the New York Times calls an "earth rattling political upset". People from around the country and the world are calling relatives and friends in Minnesota, and asking how it happened, and why. Minnesota Public Radio's Mary Losure reports. As the news of Jesse Ventura's victory spread, the David Letterman show ran wisecracks about a governor whose shorts glitter-