"It is a massive victory for the people of Pakistan," said Information Minister Nisar Memon. "They were not affected by the negative propaganda of the opposition. The opposition has been summarily rejected, and now they should accept the verdict of the people."
The turnout at the last parliamentary election, in 1997, was under 36 percent and the latest numbers might surprise independent observers who said polling stations were largely quiet in the country's two biggest cities, Karachi and Lahore.
Opposition political parties, which called for a boycott of the referendum and dismissed it as undemocratic, estimated a turnout of just five to seven percent, while a respected human rights group also said the turnout was low.
"It was farcical," said I.A. Rehman, director of the independent Human Rights Commission of Pakistan (HRCP). "The question of turnout is totally irrelevant because everywhere the votes were stuffed."
Musharraf, who seized power in a coup in 1999 and risked national outrage by siding with the United States in the Afghan war, had hoped Tuesday's referendum would give his presidency a stamp of approval.
By early afternoon the Election Commission reported results from three-quarters of the country's polling stations, with 98 percent of voters favoring Musharraf and less than 2 percent against. The final vote count and the official voter turnout was expected to be known later in the day.
With reports in from more than 66,000 of the 87,242 polling stations, Musharraf had 36.5 million votes in his favor, and only 625,891 votes against him, according to the Election Commission. Those figures so far amount to 62 percent of the more than 60 million eligible voters.
Memon said the turnout was "much higher than the government's expectations." He rebuffed earlier claims by rival politicians that the turnout was low and amounted to a rejection of Musharraf.
"The voting was orderly. No untoward incident was reported" from any part of the country, Memon told reporters. "Those who opposed the referendum preferred to stay at home and didn't create any problem."
Reuters journalists saw evidence of public sector workers being pressured to vote in an apparent effort to bolster the turnout, and, in one instance, saw ballot boxes being stuffed by officials and local government officers.
In a preliminary report, the Lahore-based human rights group HRCP said voting irregularities "exceeded its worst fears."
The United States has refrained from criticizing the referendum, but Commonwealth Secretary-General Don McKinnon said Pakistan would be monitored and discussed at the next Commonwealth Ministerial Action Group meeting.
"The Commonwealth would be concerned if the referendum...were used to entrench any undemocratic form of government," he said in a statement released in London. "We wish to see a full return to constitutional rule in Pakistan."
Pakistan was suspended from the Commonwealth, a grouping of former British colonies, after Musharraf's coup.
Individual voters who supported Musharraf praised him for backing the U.S.-led war on terrorism, promoting economic stability and fighting corruption. However, the main opposition parties and hardline Islamic groups claimed their call to boycott the vote had kept Musharraf from getting the mandate he wanted.
Salma Rahim, an Islamabad housewife, said Wednesday that her entire family voted for Musharraf.
"People are expecting big things from him," Rahim said. "Now he must prove himself and do something good for the country. He should take action against corrupt people and punish those who kill innocent people."
But others were disgruntled.
"Pervez Musharraf has no right to rule the country," said Razzaq Mahmood. "All big political parties oppose him and only irrelevant politicians support him."
Despite being the chief of Pakistan's powerful military, which seized power from the democratically elected government in 1999, Musharraf campaigned like a politician.
He crisscrossed the country pumping hands, mingling with the people and putting up giant pictures of himself throughout the capital of Islamabad. He asked for a protracted term as president to allow him time to put in effect economic and political reforms.
Musharraf's most vocal critics have been radical Islamic leaders, who have a following in the deeply conservative tribal belt that borders Afghanistan and who supported that country's deposed Taliban.
The Supreme Court endorsed Musharraf's takeover, but gave him three years to introduce reforms and return the country to democracy. The deadline expires in October. On Saturday, the Supreme Court rejected a challenge to the referendum and backed Musharraf, saying it was legal.