Arizona was given a gender parity score of 30.8 for 2015. In comparison, the national average is 18.1, which is a 2.3-point increase from the previous average calculated in 2013. New Hampshire is first in the nation with a score of 57, while Mississippi scored a 7 on the gender parity scale, ranking No. 50 on the list. Mississippi remains the only state in the country never to have elected a female governor or to have sent a woman to the U.S. Congress. Continue Reading.