Senegal's opposition candidate, who won the tightly contested presidential race, secured over 54% of the votes, according to preliminary results released Wednesday.

The presidential election Sunday marked a stunning victory for 44-year-old Bassirou Diomaye Faye, who was freed from prison less than two weeks ago and is now due to be the youngest leader of the West African nation.

The government-backed candidate, former Prime Minister Amadou Ba, conceded to Faye on Monday. President Macky Sall, who had backed Ba, also declared Faye the winner.

At a news conference in Dakar, the court of appeals announced Wednesday that Faye won 54.28% of the vote. Ba garnered 35.47% of the votes cast.

The results are preliminary – after all the votes have been counted – but are expected to be confirmed Friday.

Faye's release from prison followed a political amnesty granted just in time for the balloting. He was little known until popular opposition leader Ousmane Sonko, who was barred from running due to a prior conviction, chose Faye to run in his place.

In his first speech as president-elect, Faye promised to fight corruption and reform the economy.

The election came after months of unrest. Both Faye and Sonko were arrested last year, and there were concerns that the president would seek an unconstitutional third term.

President Sall sought to delay the election until December but that move was blocked by the country’s constitutional court and the government was forced to allow the election to go forward this month.

The sole woman in the race, Anta Babacar Ngom, gained less than 1% of the votes. No other candidate among the 19 listed on the ballot got more than 3%, reflecting how voters were evenly divided between the two front-runners, Ba and Faye.