SANTIAGO (Reuters) -- Opposition candidate Sergio Jadue won the twice-held election for president of the Chilean Football Association (ANFP) on Friday, opening up new doubts about Marcelo Bielsa's future as Chile coach.

Jadue will assume office on Jan. 15, officially ending the mandate of former president Harold Mayne-Nicholls, a FIFA official who appointed Bielsa in 2007.

Bielsa said before the original election in November that he would not stay on unless Mayne-Nicholls remained in office.

ANFP spokesman Wilfredo Sequeira said Jadue beat rival Ernesto Corona by 27 votes to 21.

Spanish-born Jorge Segovia beat Mayne-Nicholls in the first election in November but the result was declared null and void by a tribunal because of a clash between his personal business affairs and his position as president of first-division club Union Espanola.

Bielsa signed an extension to his contract with the ANFP after the 2010 World Cup finals, Chile's first since 1998, in South Africa where the team reached the second round before losing to Brazil.

Local media said Jadue would try to convince Bielsa to go back on his decision

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