New Hampshire’s presidential primaries appeared to deliver a near-knockout blow for opponents of Donald Trump and Joe Biden Tuesday night, even as former U.N. Ambassador Nikki Haley – Trump’s sole remaining opponent – says the fight is not over. And in many ways, the first-in-the-nation primary grabbed the same spotlight it always has, drawing in record numbers of voters, throngs of national and international media, and decisive results that will affect the races for both parties. But as the signs come down and the campaigns pack up their headquarters, there are some lessons to be learned. Her…