President Abdulla Yameen told a public rally in the capital island Male yesterday night that a depleted Elections Commission may not be able to conduct the vote which is due to take place tomorrow.
The head of the commission and his deputy were both sacked last week for "disobeying" a Supreme Court order to adjourn part of last year's presidential election which was eventually won in November by Yameen.
"The commission barely meets the quorum (of three) to hold an election of such importance," Yameen said yesterday night.
An ally of the ruling party has also petitioned the Supreme Court seeking a postponement of tomorrow's vote, but the court has yet to announce its decision.
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The commission said it was going ahead with arrangements, unless it heard otherwise.
"Until the Supreme Court informs us otherwise, we will go ahead with the elections tomorrow," spokeswoman Aishath Shifana told AFP.
Yameen won the November 16 presidential run off, five years after the island nation introduced multi-party democracy.
Western nations as well as neighbouring India have said they were closely following developments in a country where recent political unrest has dented its image as a honeymoon paradise for tourists.
UN Secretary-General Ban Ki-moon has called for peaceful and credible elections this week.