SENATE DEBATE PREVIEW: In one of the country’s most closely watched races for U.S. Senate, Lorraine Rivera hears from the candidates, Republican incumbent Martha McSally and Democratic challenger Mark Kelly, ahead of their debate on October 6 in Phoenix. She also gets analysis on the candidates’ platforms and the outcome’s greater impact on Capitol Hill from Ron Hansen, political editor for the Arizona Republic. ELECTORAL COLLEGE: University of Arizona political scientist Barbara Norrander discusses Arizona’s significance when it comes to the Electoral College in 2020.