'Unreliable census'

The constitution calls for the Bolivian congress to approve an electoral law ratifying December 6 as the date for a general election.

But the opposition has rejected the bill because it gives 14 seats to minority indigenous groups which, they say, amounts to giving them to Morales, who has the support of indigenous groups.

They also want a new electoral register ahead of the election, saying the current census is not reliable.

The election bill has also been held up by arguments over whether Bolivians living outside the country should be able to vote.