Venezuelans are getting ready to participate in what stands to be the most consequential presidential election the South American nation has seen in more than a decade.

On Sunday, voters have a chance to elect a new leader who could put an end to the long-standing Chavista regime, a socialist-inspired political movement turned authoritarian that began nearly three decades ago with the election of Hugo Chávez and continued under the leadership of his protégé Nicolás Maduro.

Maduro, who’s…