Well, of course, it isn't the moment to lay out the evidence. There isn't any. It's all completely bogus — an urban myth on par with alligators in the sewer. One of the best responses to date came from Fergus Cullen, a former New Hampshire GOP chair, who called the claim "completely preposterous" and "absolutely delusional." Mr. Cullen also went on Twitter to offer $1,000 to anyone who can prove that a single person from Massachusetts took a bus to any New Hampshire polling place last November, let alone cast an illegal ballot. No takers so far. Even Kelly Ayotte, the New Hampshire Republican who lost her re-election bid by fewer than 800 votes, isn't buying into the story.