Chalk up two more wins, or at least 1 1/2, for voting integrity. Last week in both Arizona and Nevada, plaintiffs won decisions forcing states to tighten procedures against possible vote fraud.

The more prominent case was from Arizona, where the Supreme Court gave a significant victory, even if one that was only both partial and interim, to the avatars of honest elections. At issue is whether states, at least for purposes of state (rather than federal) elected offices, can require proof of citizenship for anyone to register to vote. This means, more broadly, whether states can impose tighter requirements for voting integrity than federal law requires, assuming there are no invidiously discriminatory effects.