Afghanistan, Kabul, 24 November / corr Trend A. Hakim / The National Front (NF) leader says Karzai must hold elections on the date set out in the constitution of Afghanistan and no one violate that.
The National Front is the main opposition to the Karzai's government.
This party has asked the government to hold next year's presidential election on the days set out in the country's constitution.
According to this party no one has the authority to postpone the time of presidential election that is set out in country's constitutions.
He added that any changes that is not in line with the constitution, is not acceptable by Afghan people.
Burhanuddin Rabbani, the leader of the National Front, said the elections must take place according to Article 61 of the constitution, which states that elections should be held 30-60 days before the end of the president's term in office.
President Karzai's term ends on April 22.
Earlier this year, the Independent Election Commission announced it would delay the election by six months because the poor winter weather would make it hard to organise polls in remote provinces.
The NF has yet to announce its candidate for the election and Rabbani said the party was considering whether to endorse a candidate who is not a member of the NF.
Rabbani said the NF supported peace-talks with the Taliban, but he said the decision was not the government's to make and that Afghans themselves should vote for or against negotiating with the militants.
The NF including those former Afghan jihady leaders that fought against Russian troops and Taliban hard liner.
They always criticize on Karzai's government for failing to bring peace and stability in the country.