Two years ago, food cart worker Fathima Shiyama had to wait in line, sometimes for days, to get cooking gas, fuel and other essentials. It was a test of patience for her and millions of other Sri Lankans as their country languished in economic and political chaos.

Wickremensignhe’s main challengers — opposition leader Sajith Premadasa and parliamentarian Anura Dissanayake, a surprise top contender who heads a new leftist coalition — have promised major political changes, including renegotiating a deal with the International Monetary Fund to win more favorable terms.

Sri Lanka reached a draft deal with creditors to restructure $12.5 billion of international bonds, it said on Thursday, in a major boost to the island nation's fragile recovery just two days before its presidential election.