PV International Desk : Leftist populist Andres Manuel Lopez Obrador was on the brink of a historic presidential win Sunday night as an exit poll gave him an overwhelming lead and both of his chief rivals conceded defeat.

Lopez Obrador, who has vowed to transform Mexico and oust the “mafia of power” that rules the country, had a 16 to 26 point lead over his nearest rival, conservative Ricardo Anaya, and a slightly larger edge over Jose Antonio Meade of the ruling Institutional Revolutionary party, according to the survey by polling firm Consulta Mitofsky.

“The tendency favors Andres Manuel Lopez Obrador. … I recognize his triumph,” Anaya said in a speech to supporters.

Minutes earlier Meade had also conceded, saying that “for the good of Mexico, I wish him the greatest success.”

Electoral officials had not released any vote returns.

Lopez Obrador, better known as AMLO, has said he will rule Mexico for the poor and fight rampant corruption.

“There is a lot of inequality, a lot of violence in this country,” said Lopez Obrador voter Hugo Carlos, 73. “This situation has to be changed.”

Exit polls by Consulta Mitofsky also forecast clear gubernatorial wins for allies of Lopez Obrador’s Morena party in four of eight state races on the ballot plus for the head of government in Mexico City. The central state of Guanajuato was predicted to go to a candidate of the conservative National Action Party.