MEXICO CITY (AP) — Cuauhtémoc Cárdenas, a three-time presidential candidate and one of Mexico’s most important modern political voices, died Wednesday at 92, Mexican President Claudia Sheinbaum said.

An undisputed leader of the Mexican left, Cárdenas was the son of one of the country’s most popular presidents — Gen. Lázaro Cárdenas. He was respected by allies and critics alike.

Cárdenas played a pivotal role in Mexico’s democratization, beginning with his first presidential bid in 1988, which ended in a defeat widely regarded as the result of massive electoral fraud.

He became Mexico City’s first popularly elected mayor in 1997.…