Arizona’s rapid growth means it is “likely to pick up a 10th seat in Congress” after the 2030 census, pushing its electoral-vote total from 11 to 12, according to new projections by Election Data Services, which cite a July 1 population estimate of 7.6 million and a forecast of 8.2 million residents by decade’s end. Because House seats are fixed at 435, the gain would come at other states’ expense: Oregon, Minnesota, Illinois, New York, and especially California are all expected to lose seats, while Idaho would also add one; Texas and Florida are projected to pick up two each,…