english: He won the 1999-2000 presidential election by a narrow margin in a runoff over Independent Democrat Union (UDI) candidate Joaquín Lavín.
non_english: Piyambakipun menangaken Pemilu Présidhèn Chili 1999-2000 tahap angka kalih (runoff) ingkang kebak gejolak saking kandidat UDI: Independent Democrat Union, Joaquín Lavín.