Miss. Code § 23-15-1089
The Secretary of State shall place the name of a candidate upon the presidential preference primary ballot when the Secretary of State shall have determined that such a candidate is qualified under Section 23-15-1093.
On or after January 15 immediately preceding a presidential preference primary election the Secretary of State shall publicly announce and distribute to the news media for publication a list of the candidates he intends to place on the ballot at the following presidential preference primary election. Following this announcement he shall not add candidates to his selection, and he shall not delete any candidate whose name appears on the announced list, unless the candidate dies or has withdrawn as a candidate as provided in this chapter.
Miss. Code § 23-15-1089