Mississippi
June 7 | June 28
Open: Jan. 1, 2021 (no such assessments may be paid before Jan. 1 of the year in which the primary election for the office is held)
Close: March 1 (by 5 p.m. on March 1 of the year in which the primary election for the office is held or on the date of the qualifying deadline provided by statute for the office, whichever is earlier)
Miss. Code Ann. § 23-15-299