Both candidates for Prime Minister of Ukraine claim victory:

Ukrainian opposition leader Viktor Yushchenko claimed a "convincing" victory today in the country's disputed presidential elections, as some 200,000 of his supporters protested in Kiev at suspected election fraud. The western-leaning Mr Yushchenko accused the authorities of rigging Sunday's vote in favour of the Kremlin-backed prime minister, Viktor Yanukovich, who has been officially declared the winner. And tonight, at around 1800GMT, an opposition aide, who was standing next to Mr Yushchenko on a stage in a packed Independence square, told tens of thousands of supporters to march to the main presidential offices, which are around half a mile away. Reuters reported that Yulia Tymoshenko, who heads a faction in parliament backing Mr Yushchenko, told the crowd: "We are going to go to the presidential administration in a peaceful way, without breaking anything. And either they will give up their power, or we will take it." As the opposition looked to people power, commentators said that a breakthrough was more likely to come from the increasing pressure from the West being placed on the Russian president, Vladimir Putin, to withdraw his support of Mr Yanukovich. The EU, Britain and the US have expressed their concerns about the poll. The crisis follows an election that was condemned by international observers. An exit poll, funded by western embassies, had put Mr Yuschenko ahead by 11%, but official figures gave Mr Yanukovich victory by around 3%. The results have been rejected by at least four local governments and the protests are mounting. Earlier, as his supporters staged protests and sit-ins in Independence square and surrounding streets, Mr Yushchenko told politicians gathered for an emergency session of parliament that "Ukraine is on the threshold of a civil conflict". The session was convened by the opposition to discuss their requests to annul the election results and express no confidence in the election commission. Mr Yushchenko warned the parliament: "We have two choices: either the answer will be given by the parliament, or the streets will give an answer".