Michelle Bachelet was elected as Chile's president again on Sunday in a landslide victory that hands the center-leftist the mandate she sought to push ahead with wide-reaching reforms.
Bachelet won with about 62 percent support, the highest proportion of votes any presidential candidate has obtained since Chile returned to holding democratic elections in 1989.
Evelyn Matthei, the conservative candidate of the ruling Alianza coalition, conceded defeat after capturing just 38 percent of the vote, the right's worst performance in two decades.
Bachelet's supporters waved flags and sounded car horns outside the La Moneda presidential palace.
Bachelet, who led Chile between 2006 and 2010 as its first female leader, will look to capitalize on her resounding win to make changes aimed at redressing persistent inequality in the world's top copper exporter.
A physician by training, Bachelet is a moderate socialist and has promised 50 reforms in her first 100 days, once she takes office in March.
Her flagship policy is a hike in corporate taxes to 25 percent from 20 percent, to pay for social reforms that include a gradual move to free higher education.
"I am happy with the result and victory and I shall be a president for everyone in Chile," Bachelet said as she received a congratulatory telephone call from outgoing President Sebastian Pinera.
RELIEF, BUT NOT A SURPRISE
Bachelet's large margin of victory will come as a relief, if not a surprise.
Approval ratings for Bachelet, loved by many Chileans for her warm and personable style, were sky-high at the end of her first term. Constitutionally barred from seeking immediate re-election in 2009, she was the runaway favorite to win this year's vote since before she even launched her candidacy.
But it has not all been plain sailing. Her campaign suffered a setback last month, when the presence of eight other candidates fractured the first round vote and left her just short of the majority needed to seal the election outright.
Her opponent, Matthei, a brusque former labor minister, was a last-minute choice for Alianza in July and struggled to gain traction against Bachelet.
Hailing from the more conservative branch of the governing coalition, Matthei was tainted in the eyes of many Chileans by her association with the repressive 1973-1990 dictatorship of General Augusto Pinochet. Her father was a general in the ruling junta and she supported Pinochet in a 1988 plebiscite.
Dissatisfaction with Pinera's government also weighed on Matthei's campaign. Despite solid economic growth and plaudits for its fiscal responsibility, the government was seen as out of touch and slow to respond to demands for change.
Chile's free-market economy and copper-fueled growth have made it a Latin American success story in the last two decades. However, there are growing calls for its wealth and opportunities to be more equitably shared.
Bachelet, a single mother who was a victim of torture during Pinochet's rule, is seen as a "people's candidate" who is more likely to deliver more equality.
"This triumph is a small step towards the changes that are coming to Chile," said 19-year-old education student Beatriz Jorquera as she joined crowds cheering outside La Moneda.
Bachelet returned to Chile earlier this year to run for the presidency after a spell heading the United Nations' gender equality body, U.N. Women.
Politically naive when she was elected eight years ago, she is now a more sophisticated operator and is in a better position to get things done, those close to her say.
Top of her list is reforming education. Good quality schooling is generally only available in Chile to those who can pay, and sometimes violent student protests demanding change have hurt the Pinera administration.
Bachelet also plans to change the Pinochet-era constitution and electoral system.
But her power will be constrained by a divided Congress. Despite losing seats in November's Congressional elections, Alianza still has a large enough majority to block at least electoral and constitutional changes.
There are some indications that they will be willing to bargain, but the price may be watered-down reforms.
The wide majority in Sunday's vote "will give her momentum going into government," said political scientist Kenneth Bunker. "But she's still going to have to negotiate in Congress."
The president-elect also faces high expectations from those who voted her in, and she is not likely to be given much of a honeymoon once her four-year term starts.