The referendum on the Constitution is scheduled for April 25, while the first round of presidential and legislative elections will be held on September 19. Subnational elections will be also held on November 21.
"I want to reaffirm that all votes will be counted. We will be able to carry out our mission in an independent manner while maintaining credibility and transparency in a democratic dynamic," Mesadieu said.
Legislative and subnational elections were supposed to be held in 2018 but they were postponed due to protests demanding President Jovenel Moise's resignation.
Constitutional reforms include the abolition of the Senate, the removal of a ban on dual nationality, and the acceptance of diaspora lawmakers.
Traditional and opposition parties have insisted on Moise's replacement by a three-year transitional government while highlighting that his term in office ends on February 7, 2021, and not in February 2022 as he proclaims.
The opposition also rejected the appointment of CEP representatives, claiming it was approved without a political agreement and they were members of the ruling party.
Since January 2020, Moise has been governing by presidential decree as the mandates of lawmakers and senators expired without the occurrence of legislative elections.
January 1st marks 216 years of Haiti's independence. Here is a reminder on how much France ows to the first black led republic in the world. pic.twitter.com/OjXOugUPul