New polling confirms that the race between former President Donald Trump and Vice President Kamala Harris remains incredibly tight, meaning the stakes couldn't be higher at next week's ABC News Presidential Debate. With many undecided voters still weighing their options and Vice President Harris making her presidential debate stage debut, what will it take for either candidate to come out victorious? And could a standout debate performance on September 10th be enough to secure an election win?  Democratic pollster and CEO of Stagwell Inc., Mark Penn, weighs in on which issues the candidates need to spotlight on the debate stage and how meaningful fresh momentum can be this close to the election. Follow Martha on X: @MarthaMacCallum Learn more about your ad choices. Visit megaphone.fm/adchoices