When the nation votes in November, working control of the U.S. Senate could hinge on three Western races involving three members of a Mormon family whose roots in the region go back 155 years. The Udalls remain rooted in the inland West, where political power has flowed through four generations. Rep. Mark Udall, D-Colo., was in Seattle last week to raise money in his campaign for the seat of retiring Republican Sen. Wayne Allard. He is an Outward Bound veteran, outdoorsman and conservationist in the tradition of his father, the late Rep. Morris Udall, D-Ariz. "It's in his blood. It's...