"If Saddam had wanted to vote he would have been entitled to do so but he would have had to go to a polling station in person," said Farid Ayar, spokesman for Iraq's Electoral Commission.
There was no system for absentee voting in Iraq in Sunday's election, though many Iraqis living abroad cast ballots.
The US military, which is holding Saddam in a camp near Baghdad airport, confirmed that the ousted ruler had not voted.