Former President Donald Trump “whiffed” and made a tactical error that could cost him, a Democratic strategist noted on CNN on Friday night. Chuck Rocha, founder of Nuestro PAC, told panelists on “NewsNight” that Trump rebuffed an opportunity to make amends with voters of former primary foe Nikki Haley, whom he defeated following a bitter rivalry. Trump emphasized during a “Fox and Friends” interview that he soundly defeated the former South Carolina governor the former South Carolina governor and U.N. ambassador in the Trump administration. When asked whether he feels Haley can help him defea…