There are six candidates competing against each other to become the head of the republic, including incumbent President Azali Assoumani from the Convention for the Renewal of the Comoros (CRC), who may win the election for the fourth time.
The other candidates are Salim Issa Abdillah from the Juwa Party, Aboudou Soefou from the TSASI movement, Mohamed Daoudou from the Orange Party, Mohamed Ali Soilihi from the Union for the Development of the Comoros, and independent nominee Bourhane Hamidou.
Almost 340,000 people are eligible to vote in the former French colony of fewer than one million people.
The president of the Comoros is elected for a five-year term in a two-round system.
Before the 2018 referendum that changed the electoral system, the presidency rotated among Comoros' three main islands: Anjouan, Ngazidja, and Moheli. During an island's turn to hold the presidency, it conducted a first round and the top three candidates progressed to a second national round.
However, the 2018 referendum, initiated by Assoumani, abolished the compulsory rotation of the islands and introduced a nationwide vote. 92.74% of the electorate voted in favor of the constitutional change, while 7.26% voted against it.