He has gained fame in August 2014 when he made a publication for the newspaper «Pskovskaya guberniya», where he spread information about the suspicious deaths of troops of 76th Guards Air Assault Division, Leonid Kichatkin and Alexander Osipov.

[8][9] Nonetheless, that same election, Yabloko won one seat in the Pskov Oblast Assembly of Deputies, and Shlosberg returned to the legislature.

On 3 August 2021 his registration as a candidate was declined, due to alleged links with banned Anti-Corruption Foundation.

However, on the next day he was registered, due to the fact that the court decision to ban Anti-Corruption Foundation was not yet final.

Regarding State Duma elections, however, on 9 August 2021 Moscow city court annulled his registration as a candidate, also due to alleged links with Anti-Corruption Foundation.