Buenos Aires opposition mayor Larreta set to join election race

REFILE - ADDITIONAL INFORMATION Horacio Rodriguez Larreta, Mayor and Head of Government of the City of Buenos Aires, speaks before the arrival of Argentina's incumbent President and presidential candidate Mauricio Macri during the primary elections, at a convention centre in Buenos Aires, Argentina, August 11, 2019. REUTERS/Luisa Gonzalez/File Photo

BUENOS AIRES (Reuters) - Horacio Rodríguez Larreta, mayor of Argentine capital Buenos Aires, is set to announce his 2023 presidential election bid, a spokesman for the conservative opposition politician said on Wednesday, as a fragmented field of runners starts to emerge.

Larreta, a 57-year-old economist who has led the city since 2015, will seek to represent the main Together for Change opposition coalition, where he faces likely internal competition from former Minister of Security Patricia Bullrich.