Supporters of Nigerian Vice President Atiku Abubakar have launched a new political party to oppose a possible re-election effort by President Olusegun Obasanjo.

They say the new party, the Advanced Congress of Democrats, will allow Mr. Abubakar to contest next year's presidential elections and help rally opponents of the president.

The spokesman for the new party, Lai Mohammed, tells VOA that efforts to amend the constitution to allow Mr. Obasanjo's re-election are "unconstitutional, immoral and illegal."

Nigeria's parliament is debating a constitutional amendment proposed by supporters of Mr. Obasanjo that would permit presidents three terms in office instead of two. The president has not yet said whether he will run for a third term if the measure passes.

Mr. Abubakar announced his intention to run for president earlier this month.