If Maduro loses, will he cede power? Venezuela’s election, explained.

The government has disqualified the opposition’s chosen candidate; muzzled, harassed and arrested campaign staff; and barred some international observers from monitoring the vote. Still, crowds have flooded streets across the country to rally around a substitute candidate, Edmundo González.

The opposition is hoping for a victory too big for Maduro to deny. Allies across the region, and officials in the United States, are prepared to help negotiate a peaceful exit. But the strongman is unlikely to give up power willingly.

In a high-stakes election filled with uncertainty, here’s what to know.