Venezuela’s presidential candidates wrapped up their campaigns with competing rallies that brought thousands of supporters into the streets of the capital Caracas this week. On Sunday, voters will decide whether to elect President Nicolás Maduro to a third term in office. His main challenger is former diplomat and opposition candidate Edmundo González Urrutia.

The U.N. Refugee Agency estimates more than 7.7 million people have left Venezuela since 2014 as sanctions imposed by the U.S. and European Union devastated Venezuela’s economy.