Chile's once and future leader Michelle Bachelet easily won Sunday's presidential runoff, returning center-left parties to power by promising profound social changes in response to years of street protests, The Associated Press reported. Bachelet won 62 percent of the vote, the most decisive victory in eight decades of Chilean elections. The center-right's Evelyn Matthei promptly congratulated her rival, saying: "I hope she does very well. No one who loves Chile can wish otherwise." Bachelet needs the momentum of the victory to strengthen her mandate and try to overcome congressional opposition to fulfill her promises.