Senate district thirty-eight is composed of Dona Ana county precincts 7 through 10, 14, 16 through 19, 23, 31, 37 through 40, 49, 53 through 58, 78, 79, 82, 96, 98, 101, 108, 145 through 148, 150, 151, 154 through 156, 184 and 187.