By Uditha Jayasinghe, Sudipto Ganguly and Libby George COLOMBO/LONDON (Reuters) - Sri Lanka's new president won the election decisively, but his toughest task still lies ahead as he seeks to balance promises to aid the nation's poor against the need to keep crucial supplies of cash flowing from the International Monetary Fund.

Sri Lanka's new leftist president is expected to call a snap parliamentary election ahead of his plans to renegotiate the bankrupt island nation's unpopular International Monetary Fund bailout programme.

Sri Lanka's new leftist president dissolved parliament on Tuesday and called a snap election as he prepares to renegotiate the bankrupt nation's unpopular International Monetary Fund bailout programme.

The International Monetary Fund said it’s looking forward to working with Sri Lanka’s newly elected leftist president, including on the latest review of the country’s $3 billion bailout package.

Sri Lanka ’s bonds fell on Monday in the wake of the upset win at the weekend by Dissanayake, the country’s first president from outside its traditional ruling elite. “I will heed the best advice,” said Dissanayake,

Sri Lanka’s dollar bonds slid after leftist candidate Anura Kumara Dissanayake won the presidential election over the weekend.Most Read from BloombergThe Moonshot Plan to Eliminate Deaths on America’s RoadsAOC Proposes $30 Billion Social Housing AuthorityBelfast’s Grand Central Station Creates New Era for Northern Ireland’s Public TransportNew York City’s Transit System Plans $65.