The election is based on a proportional representation system that requires voters to select a party's list of candidates rather than one specific individual.

CNN: Iraqi Kurds head to the polls

The new law embraces a system that combines direct election and proportional representation.

CNN: THE NEW ELECTION MATH

Assuming it has passed, there will now be a fresh general election, in December, with a more proportional system of representation, in which many more Sunnis are expected to participate.

ECONOMIST: Saddam in the dock as Iraq counts its ballots | The

Mr Kennedy says he expects Labour to honour its pledge but he strenuously denies any suggestion of a pre-election pact between himself and the prime minister to introduce the lesser form of proportional representation - the Alternative Vote system.

BBC: Charles Kennedy

He also called for a full proportional representation voting system, which he said would mean his party would come second or third in the next general election.

BBC: UKIP considers leadership hopefuls