Standard micro-targeting – where you send a particular message only to certain voters — is tough in the extremely tiny voter pool that makes up Iowa Republican caucusgoers. But that doesn’t mean that campaigns aren’t trying.

A mailer, pointing out that Mike Huckabee raised taxes on dog groomers, has reached certain Iowans who own dogs. (Maybe they’re aiming for the Mark Levin demographic.)

Who knows? In a thoroughly noisy and chaotic campaign atmosphere, maybe something that addresses an issue near a voter’s heart – their pet – will break through the noise.