NORTH CHARLESTON — Former South Carolina Gov. Nikki Haley told supporters Wednesday she can still win her home state’s first-in-the-South GOP contest Feb. 24, despite trailing former President Donald Trump in Iowa and New Hampshire. “The political elites in this state and around the country have said we need to let Donald Trump just have this,” Haley said, prompting boos and shouts of “No!” from a crowd of more than 500 people. “We’ve only had two states that have voted. We have 48 to go.” It was Haley’s first campaign event back in South Carolina since the field narrowed to her and Trump. Hal…