While ostensibly rivals for the nation's top executive position, nationalist Slutsky and liberal-leaning Davankov are widely seen as mere token opposition by analysts.
His support spiked with the onset of the war against Ukraine, and he currently has an approval rating of 82%, according to Statista, a global data platform.
Putin has held continuous positions as president or prime minister since 1999. He has been president since 2012, with his previous stint as president running from 2000 to 2008.
Not all individuals seeking to run against Putin have been given clearance to stand for election.
A former TV journalist and Ukraine War critic has been disqualified from running against Putin in next year’s presidential election.
Yekaterina Duntsova, 40, an independent politician who wanted to run on a platform to end the war with Ukraine, had her candidacy application unanimously rejected by the country’s electoral commission on Saturday, which cited "numerous violations" in the papers she had submitted.
Fox News Digital's Michael Dorgan contributed to this report.