Chileans head to the polls Sunday to choose a president from nine candidates, with a former president favored to win.
Center-left candidate Michelle Bachelet holds a wide lead with her reform platform. She was Chile's first woman president, serving from 2006 to 2010.
Ms. Bachelet is backed by her New Majority alliance of socialists, Christian Democrats and communists.
She has pledged to narrow the country's wage income gap and revise the constitution, which dates back to the 17-year dictatorship of Augusto Pinochet.
A candidate must win more than half of the vote to be elected outright. Otherwise, the two top candidates will face a runoff on December 15.
All 120 lower house seats and 20 out of 38 Senate seats are also being contested.
Polls open at 8 a.m. .