MICKEY KAUS: “One tidbit uncovered in a round of investigative drinking in New Hampshire: Some politicos worry that Rand Paul’s many out-of-state volunteers may decide to vote in the primary, using the state’s relatively loose same-day-registration procedures. … These would not be local crossover voters who are registered as independents and decide to make some mischief. It would be mischief-making on a whole other level. … John Fund, call your office.”