A woman wearing a protective mask and gloves, used as a preventive measure against the spread of the coronavirus disease (COVID-19), casts her ballot at a polling station during a seven-day vote on constitutional reforms, in the village of Gigirevo in Moscow region, Russia June 25, 2020.

A local resident fills in documents near a mobile ballot box outside her house during a seven-day vote on constitutional reforms, in the village of Troitskoye in Moscow region, Russia June 25, 2020.

A woman casts her ballot at a polling station during a seven-day vote for constitutional reforms in Vladivostok, Russia, June 25, 2020.

A member of a local electoral commission talks to a man holding a dog at an outdoor polling place during a seven-day vote on constitutional reforms in Saint Petersburg, Russia June 25, 2020.

Local residents fill in documents as members of an electoral commission visit their house during a seven-day vote on constitutional reforms, in the village of Lutsino in Moscow region, Russia June 25, 2020.

A local electoral commission's member wearing protective gloves, used as a preventive measure against the spread of the coronavirus disease (COVID-19), holds ballots at a polling station during preparations for the upcoming nationwide vote on constitutional reforms in Moscow, Russia June 23, 2020.

Deputy Head of Russia's Security Council Dmitry Medvedev casts his ballot at a polling station during a seven-day vote on constitutional reforms in Moscow, Russia June 25, 2020. Sputnik/Ekaterina Shtukina/Pool via REUTERS

A local resident puts her ballot into a mobile ballot box as members of an electoral commission visit her house during a seven-day vote on constitutional reforms, in the village of Lutsino in Moscow region, Russia June 25, 2020.

A woman wearing a protective mask and gloves, used as a preventive measure against the spread of the coronavirus disease (COVID-19), leaves a voting booth at a polling station during a seven-day vote on constitutional reforms, in the village of Gigirevo in Moscow region, Russia June 25, 2020.

Members of a local electoral commission walk next to a polling station during a seven-day vote on constitutional reforms, in Moscow, Russia June 25, 2020.

A member of a local electoral commission puts stamps on ballots at a polling station during preparations for the upcoming nationwide vote on constitutional reforms in Moscow, Russia June 23, 2020.

A local electoral commission's member wearing protective masks, face shields and gloves, used as a preventive measure against the spread of the coronavirus disease (COVID-19), is seen at a polling station during a seven-day vote on constitutional reforms, in the village of Gigirevo in Moscow region, Russia June 25, 2020.

A local resident fills in documents as members of an electoral commission visit her house during a seven-day vote on constitutional reforms, in the village of Busharino in Moscow region, Russia June 25, 2020.