STORY: Following weeks of campaign events that featured catchy reggaeton songs and popular entertainers, over 3 million voters will decide who is best placed to fix Panama's pressing economic problems, tackle corruption and restore the country's reputation as an investment haven.

Panama's electoral rules do not require a run-off, making Sunday's result final. Campaigns have said they will send volunteers to the polls to oversee voting and ensure a fair election.

No single party is forecast to win control of the legislature, where 885 seats are up for grabs.

Panama's next government will have to contend with a troubled pension fund system, high levels of public debt and the loss in income from the closure of the mine, which accounted for about 5% of gross domestic product.

The next administration will also inherit problems faced by the Panama Canal, which saw revenues tumble after it was forced to cut ship crossings due to a prolonged drought.