On the final weekend leading up to the critical first-in-the-nation New Hampshire primary, supporters of former UN ambassador Nikki Haley fear her campaign may be over if she doesn’t win the Granite State. Former New Hampshire state senator Gordon J. Humphrey — who left the Republican Party after Donald Trump won the GOP nomination in 2016 — told the New York Times that there are “very big stakes” for Haley concerning Tuesday’s primary contest. “If he wins here, Trump will be unstoppable,” Humphrey said. POLL: Should Trump be allowed to hold office again? Haley has effectively bet her campaign…