If at first you don’t succeed, try, try again—or just hide your idea in a giant piece of legislation, where you hope it won’t get noticed. The National Popular Vote campaign hopes that Minnesota voters won’t see its sneaky maneuver until it’s too late. Perhaps National Popular Vote supporters feel desperate. They’ve been trying to get their controversial interstate compact approved in Minnesota since 2009, but the legislation always flounders. This year, National Popular Vote is trying something new in Minnesota. Its compact has been introduced as standalone legislation, just as it normally is. Meanwhile, the compact also has been...