Amid a crush of cameras, opposition leader Alexei Navalny squeezes into a Moscow polling station along with his family.<br/> <br />Navalny - a fierce critic of President Vladimir Putin - is one of six men vying to become the next mayor of the Russian capital.<br/> <br />With help from his daughter, Navalny cast his ballot Sunday in an election with high stakes for the Kremlin and Russia's opposition.<br/> <br />He said he hoped the vote would be free and fair.<br/> <br />"I would really like Muscovites to be able to express their will and to choose the mayor they want," he said.<br/> <br />According to opinion polls, the 37-year-old Navalny appears to have little chance of winning.<br/> <br />But a strong showing would be a blow to Putin, who has backed this man - Kremlin insider Sergei Sobyanin.<br/> <br />The 55-year-old incumbent was appointed to a five-year term in 2010, but called an early election to bolster his legitimacy.<br/> <br />The Kremlin so confidant of a Sobyanin win that Putin has been pencilled in to attend
