Progressives are on the move once more. Wisconsin lit the spark, as workers, students, teachers and farmers occupied the state’s capitol in February and launched recall elections that sobered conservative Republican Gov. Scott Walker and his legislative allies. Occupy Wall Street turned that spark into a conflagration that swept the nation. Last week, in Ohio and Maine and even Mississippi, voters overwhelmingly rejected efforts to trample worker rights, constrict the right to vote and roll back women’s rights. These electoral victories have led pundits to wonder whether Occupy Wall Street will imitate the Tea Party and stand candidates for office....