Businessman Jovenel Moise, the candidate backed by former president Michel Martelly, won Haiti's presidential vote in the first round, scoring 55.67 percent support, official early results showed Monday.

Provisional Electoral Council chief Uder Antoine said Moise came ahead of Jude Celestin, candidate of the opposition LAPEH, with 19.52 percent, while Moise Jean Charles got 11.04 percent and Maryse Narcisse 8.99 percent.

Haitian law offers candidates the opportunity to challenge the results from the presidential and legislative election in electoral courts, before final results are due to be published on December 29.