CARACAS, Venezuela (AP) — The future of Venezuela is on the line. Voters will decide Sunday whether to reelect President Nicolas Maduro, whose 11 years in office have been beset by crisis, or allow the opposition a chance to deliver on a promise to undo the ruling party’s policies that caused economic collapse and forced millions to emigrate.

Historically fractured opposition parties have coalesced behind a single candidate, giving the United Socialist Party of Venezuela its most serious electoral challenge in a presidential election in decades.

Maduro is being challenged by former diplomat Edmundo González Urrutia, who represents the resurgent opposition, and eight other candidates. Supporters of Maduro and Gonzalez marked the end of the official campaign season Thursday with massive demonstrations in the capital, Caracas.