Won the election here means 22.94% of the vote, not long after having polled at 5%. He didn't even have a party.
This person went really quickly from unknown to anyone not into politics, to incredibly popular within a targeted media bubble and still unknown to anyone unfamiliar with that bubble.
it's not "at minimum one quarter of the country", the turnout was 52.56% of registered voters, so its at minimum 22.94% of 52.56% of 18 million, which is 11% of the total population of Romania.
This person went really quickly from unknown to anyone not into politics, to incredibly popular within a targeted media bubble and still unknown to anyone unfamiliar with that bubble.