^The office was abolished by the Constitution of 1832, and the duties of president of the Senate were incorporated into a separate office. The Constitution of 1869 re-established the office of lieutenant governor, which also re-assumed the duties of the presidency of the Senate.
^ abcdAs president of the state Senate, filled unexpired term.
^Resigned following an arrest for violating neutrality laws by assisting with the liberation of Cuba. He was found not guilty, but the political fallout led to his resignation.
^As president of the Senate, filled term until his Senate term expired.
^Resigned due to political tension over secession.
^Term effectively ended when he was arrested by Union forces.
^Resigned to take an elected seat in the United States Senate; Alcorn's senate term began March 4, 1871 but he delayed taking it, preferring to continue as governor.
^Impeached; made a deal with the state legislature to resign, and all charges were dropped.
^Since both the Governor and Lieutenant Governor had been impeached, the former resigning and the latter being removed from office, Stone, as president of the Senate, was next in line for the governorship. Filled unexpired term and was later elected in his own right.
^As lieutenant governor, filled unexpired term, and was later elected in his own right.
^Lewis McAllister won a special election became the first Republican to win a seat in the Mississippi House of Representatives in the 20th Century.
^Seelig Wise became the first Republican to win a seat in the Mississippi Senate in the 20th Century during the 1963 general election.
^Elected in November 1978 then appointed by Governor to vacancy caused by resignation of his predecessor.
^ abDue to pre-clearance issues with the Department of Justice over the Voting Rights Act with unconstitutional redistricting, federal courts forced a second election for the whole legislature in 1992 for a three-year term.
^ abInitially appointed to fill vacancy; later elected.
^Four senators, Terry Burton, Videt Carmichael, George "Tommy" Dickerson, and Travis Little, switched parties from Democratic to Republican before the 2003 session. A special election, brought on by the resignation of Democrat John White, flipped another seat when Republican Charles Walden won to succeed him before the session.
^Five representatives, Larry Baker, Jim Barnett, Herb Frierson, Frank Hamilton, and John Read, switched parties from Democratic to Republican.
^ abcdOne senator switched parties from Democratic to Republican.
^Senators James Walley and Tommy Gollott switched parties from Democratic to Republican, flipping control of the chamber.
^ abcdeOne representative switched parties from Democratic to Republican.
^Senators Cindy Hyde-Smith and Ezell Lee switched parties from Democratic to Republican.
^Four representatives, C. Scott Bounds, Bobby Shows, Russ Nowell, and Margaret Rogers, switched parties from Democratic to Republican between the 2010 and 2011 sessions of the legislature. After the session, Rep. Jeff Smith switched parties from Democratic to Republican to run in the general election.
^At the filing deadline for the general election, Democratic Rep. Nick Bain (District 2) switched parties to the Republicans, and Democratic Reps. Steve Holland (District 16) and Angela Cockerham (District 96) switched to become Independents;[5] Rep. Cory T. Wilson (R-73) resigned after appointment to the Mississippi Court of Appeals. His seat remained vacant until the general election in November.[6]
^After the 2019 election, two Democratic representatives left the party and registered as Independents.
^Kevin Horan switched his affiliation from Independent to Republican.
^Jon Ray Lancaster switched parties from Democratic to Republican. Shanda Yates left the Democratic party and registered as an Independent.