KIEV, Ukraine — A political crisis erupted here Monday as official results showed Prime Minister Viktor Yanukovich winning a bitterly contested presidential election, while opposition leader Viktor Yushchenko brought supporters into the streets to press his own claim of victory.
Ukrainian security forces threatened a crackdown as tens of thousands of protesters massed in central Kiev chanting the name of the pro-Western opposition leader. Foreign observers -- including President Bush's personal envoy, Sen. Richard G. Lugar (R-Ind.) -- condemned alleged election fraud, throwing their weight behind Yushchenko and his charge that the official count was wrong.
The Central Election Commission announced that with 99.14% of voting districts counted, the prime minister led in the runoff with 49.4% to Yushchenko's 46.7%.
However, an exit poll financed in part by the U.S. Embassy and other Western diplomatic missions showed the opposition leader winning 54% to 43%.
Yushchenko won the first round three weeks ago by a tiny margin in a field of 24 candidates.
Thirteen years after the collapse of the Soviet Union, the election marks a critical moment for this nation of 48 million. Yushchenko, 50, who is seen as a market-oriented democratic reformer, aims to move the country quickly toward closer ties with the United States and Western Europe. He is a former prime minister whose wife, Kateryna, is a Ukrainian American.
Yanukovich, 54, who is popular in Ukraine's largely Russian-speaking east, has emphasized economic ties with Moscow. He has the backing of outgoing President Leonid D. Kuchma, whose own reelection in 1999 drew criticism from Western observers who said it failed to meet standards of fairness.
Speaking Monday evening to about 70,000 supporters gathered in Kiev's tree-lined main street and adjacent Independence Square, Yushchenko and fellow opposition leader Yulia Tymoshenko called for escalating the protests. They also urged supporters to be prepared to defend an encampment of about 250 tents that student demonstrators set up in the area.
"Authorities want to destroy our tent city," Yushchenko said. "We must defend every chestnut tree, every tent. We must show to the authorities we are here for a long time."
The opposition leaders vowed to challenge the election through parliament and the courts, and called for a protest outside parliament today.
"Our aim is to daily increase the number of people who are really ready to pressure the authorities and take power in their hands," Tymoshenko told the crowd. "Their plan is to exhaust us, but we'll come every morning, and there will be more and more of us. The only thing we won't let happen is for Yanukovich to be the president of Ukraine."
Ukraine's prosecutor general, Interior Ministry and security services issued a joint statement warning that "lawlessness" would not be tolerated.
"We appeal to the organizers of mass protests to assume responsibility for their possible consequences," the statement said. "We want to assure everyone that in the event of any threat to constitutional order and the security of our citizens, we are prepared to put an end quickly and firmly to any lawlessness."
Yanukovich, in comments reported by the Russian news agency Itar-Tass, claimed majority support of the voters and warned against "a small group of radicals who seek to divide Ukraine by resorting to pressure and unlawful actions."
"They are carrying out a prepared scenario and trying to draw young people into it," he said, adding that he had been asked "by many Ukrainian mothers to prevent street disorders where their children may get hurt."
"Authorities have enough wisdom, sense of balance and responsibility to prevent destabilization," he said.
Speaking at a U.S. Embassy news conference, Lugar, who heads the Senate Foreign Relations Committee, asserted that the results were rigged, and called on Kuchma to ensure that irregularities were corrected.
"It is now apparent that a concerted and forceful program of election-day fraud and abuse was enacted with either the leadership or cooperation of governmental authorities," Lugar said. "I believe that President Kuchma has the responsibility and the opportunity for producing even at this point an outcome which is fair and responsible."
Lugar also quoted a letter from Bush that he had delivered to Kuchma: "You play a central role in ensuring that Ukraine's election is democratic and free of fraud and manipulation. A tarnished election, however, will lead us to review our relations with Ukraine."
Relations between the two countries, strained in the early years of Kuchma's rule, improved after Ukraine sent 1,600 troops to Iraq to help with the U.S.-led occupation there.
