The parliamentary election excluded most opposition politicians from seeking seats after authorities cracked down on Kremlin critics.
"I have been involved in rather a lot of matters," Nadezhda Zagordan said. "And each matter has participants who are not interested in certain things becoming public or attracting the attention of the police. Absolutely any case could lead to actions like this."
Vitaliy Milonov also wants to ban Russians from transitioning from one gender to another.
Authorities are facing mass opposition to plans to forcibly remove residents from their homes in favor of new construction that many say will only benefit rich developers and their partners in government.
The United Russia party has accused U.S. media of calling into question the "democratic nature" of Russia's elections.
Italy's Northern League become second EU party in three months to sign United Russia partnership.
Leading members of both houses of parliament have predicted turbulence for the European Union.
More than half of Russians consider United Russia a party of crooks and thieves.
The Turkish president phoned his Russian counterpart and the pair discussed bilateral ties.
Nine polling stations' results were nullified due to suspected fraud.
The Russian leader said Moscow should listen to opponents but only "patriotic" ones.
Videos showing ballot box stuffing spread online, as the Kremlin hailed a triumph.
The Chechen leader cast his ballot, then held a party, dressed as a medieval knight.
Putin's appointee in the Tula region won 84 percent of the vote amid record low turnout.
The United Russia party is set to win 343 of 450 seats in Russia's lower house of parliament.
Liberal politician Ella Pamfilova heads the country's Electoral Commission for her first election.
The president has played a part in boosting United Russia's approval amid poll drop.
Russian parliamentary elections in Crimea are "unacceptable" claims Danish minister.
The ruling party keeps ruling as an election without genuine choice approaches.
The Levada Center recently reported Russia's ruling party's decline in the polls.