Miss. Code § 23-15-65
The board of election commissioners shall meet at the courthouse of its county on the second Monday in September preceding any general election, and shall remain in session from day to day, so long as business may require. Three (3) election commissioners shall constitute a quorum to do business; but the concurrence of at least three (3) election commissioners shall be necessary in all cases for the rendition of a decision. The election commissioners shall hear and determine all appeals from the decisions of the registrar of their county, allowing or refusing the applications of electors to be registered; and they shall correct illegal or improper registrations, and shall secure the elective franchise, as affected by registration, to those who may be illegally or improperly denied the same.
Miss. Code § 23-15-65