Updated: 10:28 a.m. | Republican Jesse Kelly's latest TV ad in the hotly-contested Arizona special election to replace former Rep. Gabrielle Giffords (D) hits on a familiar issue from the 2010 elections: Cap-and-trade legislation. The ad criticizes Ron Barber, the Democratic nominee and a former Giffords aide, for supporting the 2009 bill aimed at reducing carbon emissions. https://www.youtube.com/watch?v=mC56L6MhvFY (more…)