Tens of thousands people are expected to brave the bitter cold at two major rallies in downtown Moscow on Saturday as a power play between champions of political liberalization and supporters of Prime Minister Vladimir Putin continues to unfold. The first demonstration will demand fair elections at the March 4 presidential polls, at which Putin is expected to secure a third term in the Kremlin. It will also call on Russians “not to give a single vote” to Putin. The opposition rally is widely seen by analysts as a litmus test of protesters’ ability to maintain momentum after two earlier protests against alleged vote fraud in favor of Putin’s United Russia party at December’s parliamentary polls. “We are prepared for a long tough struggle,” protest organizer and opposition figure Boris Nemtsov on the eve of the rally. “One peaceful march will not change the country.” Over 30,000 have signed up on social networks to attend the demonstration. The protests will include a march through downtown Moscow and a rally across the Moskva River from the Kremlin. The two previous rallies drew an estimated combined total of 100,000 people. President Dmitry Medvedev, widely seen as Putin’s junior partner in Russia’s ruling tandem, proposed a host of political reforms after the initial vote protests, including the return of direct elections for regional governors and easier registration for political parties and presidential candidates. His proposals were dismissed by protest leaders on Friday as \"imitation reforms.\" Putin has also ordered the installation of video cameras at polling stations and has encouraged independent monitors to oversee the presidential vote. The organization of Saturday’s march has seen the involvement of the Voters League, a freshly-minted public group that claims no involvement in politics and is led by popular figures such as novelist Boris Akunin, TV journalist Leonid Parfyonov and rock musician Yury Shevchuk. A separate rally, expected to draw some 15,000 people, will urge protesters to resist what organizers say are attempts to instigate an Orange Revolution in Russia. So-called Color uprisings took place in the former Soviet republics of Ukraine and Georgia in the early 2000s after contested presidential elections. Putin thanked late on Friday those people who planned to attend the rally in his support. “I share their views,” he said. There have been numerous reports in the Russian media of state employees being coerced to attend the Anti-Orange rally, but the authorities have said these are untrue or the actions of over-zealous, low-level officials. Both demonstrations have been authorized by City Hall. Moscow police say they will deploy 9,000 officers to maintain order at the rallies.