Kamala Harris has a viable path to victory over former president Donald Trump if she can unlock three key categories of voters and compel them to vote Democrat at the ballot box, according to her campaign manager. In a memo released on Wednesday morning and obtained by RadarOnline.com, former White House deputy chief of staff Jen O’Malley Dillon labelled Trump, 78, as a totalitarian leader of the GOP who has grown “more and more extreme.” Harris is “well-positioned to expand support from 2020, drawing the support of voters who have moved towards Democrats since the 2020 election,” wrote O’Mall…