The North Dakota Senate election could be close — close enough to trigger a recount. Given that control of the Senate could be at stake, the party lawyers will no doubt descend ready for battle. But in ND there’s a twist: No voter registration. As Sasha Issenberg explains in Slate, North Dakota is the only state without voter registration rolls. Those who show up to vote without the required identification can sign an affidavit and have their vote counted, leaving no way to challenge potentially ineligible voters who cast ballots.