Chris Christie and Nikki Haley have a Dean Phillips problem in New Hampshire

Dean Phillips isn’t likely to hurt Joe Biden in New Hampshire. But his entry into the Democratic primary could spoil Nikki Haley and Chris Christie’s electoral math here.

The two Republicans are polling better than any other candidate with New Hampshire independents who are likely to pull a GOP ballot in the state’s open presidential primary. That’s a major boost in a state where independents make up the largest share of the electorate — and where the lack of a serious contest on the Democratic side meant many of them...