California Democrats have a problem with their leading candidates. One doesn’t live in the state but allegedly lived, in the euphemistic sense, with a Chinese spy. Another has the looks and personality of a distempered boar and can’t stop screaming at staffers, reporters and anyone late with her lunch. A third is a billionaire who convenes events at luxury hotels to explain how he’ll fight against the billionaires for the working class he sometimes reads about in the paper. And those are their most popular candidates. But since this is California, the real problem is that all of those candidates...