The Romanian court found Russian interference via massive Tik Tok campaign & campaign financial violations as a result, thus the integrity of the vote had been affected, as “one candidate skirted the law in his campaign and benefited from unfair promotion”. https://www.atlanticcouncil.org/blogs/new-atlanticist/romania-annulled-its-presidential-election-results-amid-alleged-russian-interference-what-happens-next/