While leftist Mexico City mayor Andres Manuel Lopez Obrador hasn't formally announced that he is running in next year's presidential elections, many believe it is all but inevitable. Recent polls suggest he is at least 7 points ahead of other potential candidates.
Obrador, often referred to simply as "AMLO," has reportedly has not decided whether to challenge the party of President Vicente Fox. But his Democratic Revolution Party has scored several recent electoral wins in smaller national elections.
In the meantime, Obrador is facing possible charges over construction of a hospital access road on private land.