A Haitian electoral tribunal says it's incapable of ruling on legal challenges filed by three presidential candidates who lost a preliminary tally in a landslide.

The Friday decision means Haiti's highest electoral court will now have to examine challenges by losing factions in the Nov. 20 elections.

It's not clear how long it will take a panel of judges from the National Office of Electoral Disputes to issue a binding verdict.

Preliminary results show that Jovenel Moise easily won a presidential election redo against 26 rivals and no runoff would be needed.

But the results showing victory for the political newcomer backed by Haiti's previous elected leader were quickly challenged by his three nearest competitors.

The preliminary tally shows Moise beating his nearest rival by over 35 percentage points.