Cross her off the list. Just when Republican presidential candidate Nikki Haley was beginning to look like a viable alternative to You-Know-Who, the South Carolina contender tried to explain the Civil War without using the word “slavery.” That’s like trying to explain the Super Bowl without talking about football. I get that she comes from one of the states that lost the war, but other southerners — Lyndon Johnson, Jimmy Carter, Bill Clinton — managed to get over the defeat, and find their way to the White House. But not Haley. When a voter in New Hampshire — the site of the first-in-the-natio…
