TORONTO – Channel Zero-owned CHCH will be Ontario’s only over-the-air broadcaster of the 2015 Leaders Debate on Thursday.The debate will feature in-depth discussion on the economy with Conservative leader Stephen Harper, NDP leader Thomas Mulcair, and Liberal leader Justin Trudeau. It will be moderated by The Globe and Mail’s editor-in-chief David Walmsley. The two-hour program will begin at 8:00 PM ET on September 17 with a pre-show before the debate begins at 8:15 PM. Post analysis from the CHCH newsroom, hosted by CHCH evening news anchor Nick Dixon, will begin at 9:45 PM.CHCH will also offer the Leaders Debate live at...