Filing for the Louisiana presidential primaries closed on Friday, December 4, at 4:30 p.m. Ten Democrats and fourteen Republicans filed. See the list here, via the Secretary of State’s web page. Neither Jim Gilmore nor George Pataki filed.
Candidates get on the ballot by paying a filing fee of $1,125. $750 goes to the government and $375 goes to the state party.
The highest number of candidates in a past Republican presidential primary in Louisiana was 2008, when there were eleven. For the Democrats, the most was in 1992 when there were fifteen.
Although Louisiana has five qualified parties, only qualified parties with 40,000 registered members are entitled to their own presidential primaries.