MSNBC’s Joe Scarborough applauded Nikki Haley for staying in the Republican presidential primary race in the face of Donald Trump’s “meltdown.” Trump easily defeated Haley in New Hampshire, although not by quite as big of a margin as polling suggested, and he lashed out at his remaining GOP challenger after she declared she would face off against him in her home state of South Carolina and possibly beyond. “I was glad to see Nikki Haley stay in last night,” Scarborough said. “There’s so many people that have done this halfway measures and been weak. They pretty much assigned themselves to be n…