Mexican President Andres Manuel Lopez Obrador.

Six months before Mexico’s presidential election, President Andres Manuel Lopez Obrador’s approval rating is sitting at 55 percent. But a string of corruption allegations against his family and party have put AMLO on the defensive in recent weeks, chipping away the teflon coating that has protected him during his five years in office.

Salvadoran President Nayib Bukele.

Of Latin America’s six presidential elections scheduled for 2024, the incumbent party is currently favored in four. Rather than a clear break in the region’s anti-incumbent trend, however, this year’s elections will be exceptions that prove the rule. Three of them offer examples of the challenges that democracy faces in the hemisphere.