The country has been a powder keg ever since the results of first round of the presidential elections, with Calin Georgescu coming out of nowhere to win the first round, with classical polling showing him below 5%.
The candidates need to report spending to a state organization overseeing elections and this guy reported that he spent nothing on his election campaign, which is impossible as there have been flyers with his face on them, plus ads on social media. This is against the law.
There are also a lot of TikTok influencers that have come forward claiming to have received payments through a third party company to present the candidate in a positive light, and the issue is that these videos should have been tagged correctly as "electoral ads" according to Romanian law, which did not happen.
With TikTok being owned by China and their imminent ban looming in the US, there is strong suspicion that state actors are behind this, pushing Calin Georgescu through the algorithm, though this is tricky to prove.
This is not a strong grass-roots movement supporting this guy, it was a targeted effort of massive network of bots spamming his name & tiktok page on random videos on Romanian tiktok videos to push his popularity (this comes from the Romanian equivalent of CIA & other security structures). Tiktok themselves when asked to comment have investigated themselves and found nothing wrong, though they do agree that there are bots on their network and they've removed millions of fake likes & followers in Romania.
In a video posted this summer, Calin Georgescu expressed anti-NATO sentiment which he recanted after winning the first round of the elections. He has also previously declared that we could do with some "russian wisdom" and he's a big fan of the Iron Guard (https://en.wikipedia.org/wiki/Iron_Guard), which killed a bunch of political figures in Romania during their time. This organization as well as other fascist groups are illegal in Romania.
Candidates have to declare their assets as part of transparency and it seems Calin Georgescu has not declared all of his assets, which is illegal. There's also suspicions about money laundering, with a house he bought for 250K in 2006 and sold for 1M in 2011 which is unusual. This is somewhat besides the current discussion, just adding some context that this guy is not exactly squeaky clean.
A criminal investigation has been requested by The Supreme Council of National Defence, which is the autonomous administrative authority in Romania invested by the Constitution with the task of organising and coordinating, by unanimous decisions, the activities related to the country's defence and national security. This is right now in the first stages with no single person being put under indictment.