If it is a Democratic runoff primary election, then only voters who are registered Democrats and unaffiliated voters who voted Democratic in the primaries can vote and if the runoff race is a Republican one, then only voters who are registered Republicans or unaffiliated voters who voted Republican in the primaries can vote. In a congressional race, only voters who meet the aforementioned conditions within that district can vote, whereas in a lieutenant governor race, for instance, any voter affiliated with that party or who voted on that party’s ballot in the primaries can vote. Four North Carolina Republican primary races for Council of State and U.S.