SANTIAGO (AP) - Former President Michelle Bachelet has won the country's first ever presidential primary and will represent the center-left coalition in November's presidential election.

Ms Bachelet, a pediatrician who ended her 2006-2010 presidency with high popularity ratings, won the vote to lead the center-left New Majority coalition with 74 percent of the votes.

The race for the candidate who will lead the center-right Alliance for Chile is still too close to call with 90 percent polling stations reporting nationwide.

Former Economy Minister Pablo Longueira leads with 51 percent of the vote over former Defense Minister Andres Allamand who has 49 percent support.