Since Iowa holds a caucus, not a primary, it does not apply to New Hampshire's law. Iowa's law says the caucus must be "[a]t least eight days earlier than the scheduled date for any state meeting, caucus, or primary that constitutes the first determining stage of the presidential nominating process in any other state." New Hampshire requires "7 days or more immediately preceding the date on which any other state shall hold a similar election." Apparently the caucus is not considered a similar election.
