"Kast gave a unifying acceptance speech that stressed rule of law and democratic values," said AS/COA’s CEO and president.
The right-wing former legislator won the presidency with a commanding 58% in the December 14 runoff.
Public security tops voters’ concerns ahead of the February 1 election.
A look at Donald Trump’s increasingly assertive Latin America strategy
Ahead of the December 14 vote, how are the two presidential candidates approaching top issues?
A thin margin separates Trump-endorsed Tito Asfura of the National Party and Salvador Nasralla of the Liberals in a partial preliminary vote count.
Leftist Jeannette Jara won the first round, but her right-wing opponent, José Antonio Kast, leads polls in the race to succeed Gabriel Boric.