Vice President Harris and former President Trump are preparing for one of the biggest moments in this year’s election campaign — their first, and perhaps only, TV debate. The clash will take place in Philadelphia on Tuesday, hosted by ABC News and moderated by David Muir and Linsey Davis. The debate could be pivotal in a race that remains extremely close.  In the polling averages maintained by The Hill and Decision Desk HQ (DDHQ), Harris is leading by almost four points...