The Great Falls Tribune has the story about Rick Tryon who will broadcast his last show today on KINX-FM called ?Politics Montana with Rick Tryon.? Tryon's political show was on the air for 2 1/2 years. Tryon tells the paper he was able to sell some advertising for the program, but not enough. He said it was similar to asking property owners as a political candidate whether he could plant a sign on their property and people are wary about buying advertising when politics is involved. He added selling advertising for commercial radio isn?t easy, and his show was up against a three-hour Rush Limbaugh broadcast in Great Falls. He said he would love to keep doing the show as a public service, but ?the huge time commitment? led him to shutter the show.