Chaos theory

This week in the midterms: An upset in Wisconsin, a Saturday night massacre in Anchorage, and a G.O.P. that’s bracing for its House majority to slip away.

U.S. Senate candidate Mary Peltola campaigns in Homer, Alaska. (Photo courtesy of the campaign.)

Last week’s Democratic primary for governor of Wisconsin ended in a shocking result given democratic socialist candidate Francesca Hong’s wide lead in every poll leading up to the election. After weeks of panic from electability-minded Democrats, Milwaukee Co…