North Carolina holds its primary on May 8. Three parties will nominate by primary: Democratic, Republican, and Libertarian. Newly-qualifying parties nominate by convention.

According to this story, North Carolina election officials must print up seven types of primary ballot. There is the standard partisan primary ballot for each of the three parties that is nominating by primary. There is a non-partisan primary ballot for voters who are not registered members of any of the three primary parties. The non-partisan primary ballot only contains a statewide ballot measure, concerning same-sex marriage.

Then there are separate primary ballots for voters who will be age 18 by the November 2012 election, but who are not yet age 18. North Carolina law lets them vote in partisan primaries, if they will be age 18 by November. But, North Carolina law does not let them vote on ballot measures. Therefore, there are special primary ballots for these 17-year olds, that contain the partisan offices but not the statewide ballot measure.