ANKARA, Turkey (AP) - Turkey's main opposition party urged the country's electoral board Monday to cancel the results of a landmark referendum that granted sweeping new powers to the nation's president, citing what it called substantial voting irregularities.
Bulent Tezcan, deputy chairman of the Republican People's Party, or CHP, cited numerous problems in Sunday's vote, which gave a narrow victory to President Recep Tayyip Erdogan's long-time plans to greatly expand the powers of his office.
Turkey's electoral board confirmed the "yes" victory in the referendum and said the final results would be declared in 11-12 days. The state-run Anadolu Agency said the "yes" side stood at 51.4 percent of the vote, while the "no" vote saw 48.6 percent support.
An unprecedented electoral board decision to accept as valid ballots that didn't bear the official stamp has led to outrage among opposition parties. The board made the announcement after many voters complained about being given ballot papers without the official stamp. The board said the ballot papers would be considered invalid only if it was proven they were fraudulently cast.
"There is only one way to end the discussions about the vote's legitimacy and to put the people at ease, and that is for the Supreme Electoral Board to cancel the vote," Tezcan said.
He said it was not possible for authorities to determine how many ballot papers may have been irregularly cast.
Electoral board head Sadi Guven rejected opposition claims of foul play, saying none of the ballot papers that were declared valid was "fake" or fraudulently cast. Guven said the decision was taken so voters who were by mistake given unstamped ballot papers would not be "victimized."
"The ballot papers are not fake, there is no (reason) for doubt," Guven said.
Earlier Tezcan said any decision that changes Turkey's political system to such a vast extent should have been passed with an overwhelming endorsement.
"This is not a text of social consensus but one of social division," Tezcan said. "There is a serious and solid problem of legitimacy that will forever be debated."
The margin reported Sunday fell short of the sweeping victory the 63-year-old Erdogan had sought in the referendum. Nevertheless, it could cement his hold on power in Turkey for a decade and is expected to have a huge effect on the country's long-term political future and its international relations.
"I suspect the result was narrower than what Erdogan expected," said Howard Eissenstat, associate professor of Middle East History at St. Lawrence University in Canton, New York. "Erdogan has ruled with a narrow victory before. He does not see a narrow victory as anything less than a mandate. His tendency has been to not to co-opt the opposition but to crush it."
The referendum approves 18 constitutional amendments that will replace Turkey's parliamentary system of governance with a presidential one.
The new presidential system takes effect at the next election, currently slated for 2019. Other changes will take effect sooner, including an amendment that scraps a clause that required the president to be impartial, allowing Erdogan to regain membership of the ruling party he founded - or even to lead it.
Opponents had argued the constitutional changes give too much power to a man who they say has shown increasingly autocratic tendencies.
The referendum campaign was highly divisive and heavily one-sided, with the "yes" side dominating the airwaves and billboards. Supporters of the "no" vote complained of intimidation, including beatings, detentions and threats.
CHP legislator Utku Cakirozer told The Associated Press his party would file official objections Monday to results at local electoral board branches, before taking their case to the Supreme Electoral Board.
"At the moment, this is a dubious vote," he said.
The country's pro-Kurdish party said it may take the case to the European Court of Human Rights if the electoral board does not reverse its decision and nullify the ballots lacking the official stamps.
The Organization for Security and Cooperation in Europe, whose monitors observed Sunday's vote, were to announce their findings later Monday on how the ballot was carried out.
In Istanbul, hundreds of demonstrators opposed to the amendments marched in a central neighborhood late Sunday, clanging pots and pans.
Ismail Calisan, an Ankara resident, accepted the result with grace.
"Even though I choose "no" and the results came out "yes," I wish the best to our country," he said.
In Istanbul, accountant Mete Cetinkaya was worried about his country's future.
"I don't see the country is going down a good path," he said, sitting by the Bosporus. "Tayyip Erdogan may have done more good than the other big players (of Turkish politics) ... but I think of Tayyip Erdogan as just the best of the worst."
Many pro-government newspapers praised the results. The Sabah newspaper's headline read: "A popular revolution."
The Sozcu newspaper, one of a few newspapers critical of Erdogan's government, referred to the alleged irregularities and asked in its headline: "Is your conscience at ease?"
____
Elena Becatoros in Istanbul contributed to this report.