Tonight will be a political junkie channel-changer's bonanza: The U.S. Senate debate airs live on Idaho Public Television at 8 p.m. Mountain time, 7 p.m. Pacific, with Sen. Mike Crapo debating his Democratic challenger Tom Sullivan; at the same time, KTVB-TV will air a debate between the candidates for state superintendent of schools, Tom Luna and challenger Stan Olson, who first faced off on IPTV last week. There's more to come; tomorrow night is KTVB's debate in the race for governor, with Gov. Butch Otter facing off with challengers Keith Allred and Jana Kemp; and on Thursday night on Idaho Public TV, it's the big debate in the 1st Congressional District, in which freshman Democratic Congressman Walt Minnick faces off with GOP challenger Raul Labrador and independent Dave Olson.