Enrique Peña Nieto, the youthful candidate of the party that governed Mexico for decades, won a resounding victory in the country's presidential election on Sunday.
The win marks a stunning comeback for Peña Nieto's centre-left Institutional Revolutionary Party (PRI), which ruled for seven decades until 2000 through a mixture of patronage and selective repression.
The daily El Universal's exit poll gave Pena Nieto 42% of the vote, while his nearest rival, leftist Andres Manuel Lopez Obrador from the Party of the Democratic Revolution (PRD), took 31%.
Peña Nieto (45) is an ex-governor of the populous state of Mexico, located just west of the capital. He is married to glamorous telenovela star Angelica Rivera.
Crowds held back by metal fences cheered when Peña Nieto and his wife emerged from their vehicle to vote in his hometown Atlacomulco, north-west of the capital.
"My wish is for the people to be the winners on this election day," he said before posing for photos with his wife and the couple's six children. He then approached the fence and hugged and kissing well-wishers.
The dapper, perfectly-coifed candidate benefited from his family connections with powerful old guard PRI politicos as well as a stellar media team that carefully managed his appearances.
Calderon's PAN has been haemorrhaging support due to the brutal drug violence that has killed more than 50 000 people since he came to power in 2006.
His military crackdown on the cartels has turned parts of the country into war zones, and despite presiding over a period of steady economic growth, Calderon leaves as an unpopular president with a dubious legacy.
Poverty also grew under the PAN: 47% of Mexico's 112-million residents are poor, according to government figures. Mexico may be Latin America's second biggest economy after Brazil but there are nearly 15-million more poor people since the PRI left power, figures show. Poverty ranks second among voter concerns after insecurity.
Mexican presidents are elected by simple majority for six-year terms and are banned from running for re-election. There is no run-off vote.
Although mistrust in the electoral system runs high – surveys suggested some 40% of the nearly 80-million eligible voters would not bother to show up at the polls – some were keen to cast their vote.
"I've been here since 7am to vote because it's probably the last time I can do it," said 86-year-old Maria del Pilar Amezcua, the first person to cast a ballot at her polling station in Mexico City's Huatulco neighbourhood.
Election officials worked hard to convince sceptics that the ballot will be clean but faced a raft of complaints in the lead-up to the vote.
The PAN accused the PRI of handing out more than 9 900 gift cards to influence voters. Election officials pledged an investigation but refused to freeze a bank account linked to the cards containing some $5.2-million.
The PRI in turn accused the PRD and PAN of attempting to sway voters by handing out bags of food and building materials. And the PRD alleged "very serious irregularities" including PRI fuel charge cards.
Top election official Leonardo Valdes insisted that this was "the cleanest and most impartial" Mexican election ever.
"Each vote will be scrupulously counted," he said as the vote got underway.
Nearly one million Mexicans – including election workers, volunteer citizens and party representatives – as well as 700 international observers were at polling stations overseeing the vote.
Also up for grabs are 500 seats in the Chamber of Deputies, where members serve for three years; 128 seats in the Senate, which has six-year terms; and various mayoralties and governorships.
Security is a top concern in Mexico. Kidnappings, drug hits and gang warfare have turned some areas into virtual war zones.
Extra army patrols were deployed in especially dangerous regions like the northern border town of Nuevo Laredo, where a car bomb – a rarity in Mexico – detonated Friday in front of the mayor's office. – AFP