Thousands of people rallied on the streets of Moscow on Sunday to demand fair elections and challenge Vladimir Putin's 15-year rule, in the first significant opposition protest in the capital for months.

The gathering was restricted by authorities to a district of southern Moscow. Police said that 4,000 people had taken part, while the organizers of the rally said twice as many as that had attended, Interfax reported.

Russia will hold a presidential vote in 2018. Putin, who is eligible to run for the six-year presidency again, has not yet said if he will be a candidate.

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Opposition Rallies in Moscow to Demand Fair Elections

Thumbnail photo by: Maxim Shemetov / Reuters