Russian TV journalist, Yekaterina Duntsova, barred from challenging Putin in the upcoming presidential election.
Duntsova aimed to end the war with Ukraine but was disqualified for "numerous violations" in her candidacy papers.
She plans to appeal the decision, denouncing it as unjust and undemocratic.
Critics argue this move blocks genuine opposition voices from challenging Putin.
The Kremlin remains confident in Putin's popularity with 80% poll ratings.
Opposition politician Boris Nadezhdin nominated by Civic Initiative party.
Head of Russia's electoral commission advises Duntsova to gain experience for the future.
Duntsova seeks support from Yabloko party, but they decline.
Putin expected to secure a new six-year term, potentially becoming Russia's longest-serving ruler.