DAKAR (AP) ― President Abdoulaye Wade conceded defeat to his former protege Macky Sall late Sunday, congratulating him several hours after polls closed when preliminary results showed the opposition candidate had trounced the 85-year-old incumbent.

Wade called Sall around 9:30 p.m. Sunday to congratulate him on his victory, state television reported. The move alleviated fears that Wade would attempt to stay in office after 12 years or would challenge the runoff results.

Even before Wade conceded, Sall’s supporters began celebrating in the streets of the capital, singing and marching through downtown Dakar. Some even danced on the roofs of moving vehicles, and one man did a cartwheel amid the traffic near the Place de l’Independance.

Sociologist Hadiya Tandian said that Wade’s concession washes away the wounds of a violent election season, which left at least six people dead and tarnished the country’s reputation.

“This is a great victory for Senegal ― it shows the maturity of our democracy,” Tandian said. “It shows that the Senegalese believe in their voter IDs, that a voter card can change something, can make a difference. It shows that our long democratic heritage continues to live in us day by day.”

Senegal’s democratic roots run deep, and many feared Wade would not concede defeat and in the process muddy Senegal’s image as one of the only established democracies in western Africa.

Whereas most African countries began holding elections post-independence in the 1960s, the Senegalese first cast their ballots 164 years ago starting in 1848 when France gave its territory the right to elect a deputy to the French parliament.

At a midnight press conference at a Dakar hotel, Sall offered few details on the conversation he had with Wade earlier in the evening. Instead, he praised the voters and said he would be the president for all Senegalese.

“Tonight, a new era begins for Senegal,” Sall told the hundreds of journalists and euphoric supporters who crammed into the venue to hear him speak.

There was no immediate comment from Wade himself, though his spokesman Serigne Mbacke Ndiaye confirmed the president’s concession of defeat.

“Senegal, through a transparent election, just proved once again that it remains a great democracy, a great country,’’ he said in a press release.

Wade first took office in 2000 after his predecessor conceded in a historic moment for Senegal. He easily won re-election in 2007, but has seen his popularity suffer amid soaring costs of living and unemployment. When he cast his ballot last month in the first round of balloting, some voters even booed him at the poll shouting: “Old man, get lost.’’

His image also was tarnished after he began giving an increasing share of power to his son Karim, who was derisively called “the Minister of the Sky and the Earth’’ after he was handed control of multiple ministries including infrastructure and energy.

Wade’s reputation took a nosedive when he announced last year that he planned to run for a third term. For weeks leading up to last month’s election, protesters calling for Wade to step down hurled rocks at police in demonstrations that paralyzed the capital’s economic heart.

In recent weeks, images of Wade on campaign posters had their eyes scratched out. And his convoy was hit by rocks in the final days of the runoff campaign.

Marieme Ousmane Wele, 55, said she had voted for Sall because the rising prices of basic goods have made her life increasingly difficult.

“I sell cereal made from corn but the price of corn has really gone up. Now, I don’t have many customers and it’s becoming difficult to feed my own family,” she said, as men sat nearby on plastic lawn chairs in the sand listening to news about the election on portable radios.

Others, though, praised Wade for the economic progress made during his 12 years in power. At a polling station in the suburb of Grand Yoff, Raymonde Semou, 64, said Sunday she personally credited Wade with helping two of her six children find work.