Since 1963, five people from four parties have served as Chief Minister of Mizoram; the inaugural officeholder was Ch. Chhunga. The current incumbent is Lal Thanhawla of the Indian National Congress, in office since 7 December 2008. He is also Mizoram's longest-serving chief minister, with a combined tenure of over 17 years.
^A number inside brackets indicates that the incumbent has previously held office.
^This column only names the chief minister's party. The state government he headed may have been a complex coalition of several parties and independents; these are not listed here.
^ abcPresident's rule may be imposed when the "government in a state is not able to function as per the Constitution", which often happens because no party or coalition has a majority in the assembly. When President's rule is in force in a state, its council of ministers stands dissolved. The office of chief minister thus lies vacant, and the administration is taken over by the governor, who functions on behalf of the central government. At times, the legislative assembly also stands dissolved.
^Durga Das Basu. Introduction to the Constitution of India. 1960. 20th Edition, 2011 Reprint. pp. 241, 245. LexisNexis Butterworths Wadhwa Nagpur. ISBN 978-81-8038-559-9. Note: although the text talks about Indian state governments in general, it applies for the specific case of Mizoram as well.