CHARLOTTE, N.C. (AP) — Highway signs welcome drivers entering North Carolina to “the nation’s most military friendly state,” and veterans here know they’re being courted. But in a state where camouflage-colored appeals have become commonplace, recent efforts by progressive groups to cut into what has long been a reliably red constituency face an election-year test. Tar Heel State veterans interviewed earlier this month, ahead of Super Tuesday primary voting in some of the most active-duty and veteran-populous states, varied in their politics, even if they agreed that their military service had informed their opinions. Ryan Rogers, who fought in Afghanistan...