Tuesday’s primaries in eight states produced more than a few interesting nuggets, including—in the era of #MeToo—more female nominees. In South Dakota, Republicans chose Rep. Kristi Noem as their candidate for governor, while in New Mexico, Democrats picked Rep. Michelle Lujan Grisham as their gubernatorial standard-bearer.
Another twist came in Alabama’s Second Congressional District, where incumbent Republican Rep. Martha Roby failed to get 50% of the primary vote. She now must compete in a July 17 runoff against former...