Appearing on CNN “State of the Union” with host Jake Tapper, Gov. Chris Sununu (R-NH) did not express confidence that Donald Trump will prevail in November in his bid for a second presidential term. The New Hampshire Republican, once the leading backer of Gov. Nikki Haley’s bid for the GOP nomination until she dropped out, after which he switched sides, sat and watched as Tapper ran a clip of the former South Carolina governor attacking Trump for turning his campaign against Vice President Kamala Harris into a firehose of personal attacks including questioning whether she is “Black.” Following…