With several important offices on the line, North Carolina primary races will be especially important this year. North Carolina is a swing state with empty seats in the mix for the Senate and five House races. A win for Democrats in the Senate race could offer them the chance to control the Senate, while a win for Republicans maintains the current balance. But Republicans have more to lose than Democrats among North Carolina House candidates due to a last-minute redistricting. Although North Carolina has one more congressional district than it did last year, Republicans will have to win in a highly competitive district to send eight candidates to Congress as they have in the past. In contrast, Democrats went from five Democrat-majority districts to six. This year’s primaries will determine who runs in a general election that may prove a difficult battle for Republicans. North Carolina Senate Race With the …