I know this thread is old, and sorry for bumping it, but it would have fitted just in here:
In a by-election in the Western Hungarian seat of Veszprem, the independent candidate Zoltan Kesz won by 9 points over a Fidesz candidate, after the former MP (from Fidesz) went to Brussels to serve in the European Commission. The seat was won by Fidesz by over 20% in the 2014 election.
This would not be that memorable normally, however, this loss for Fidesz means that Orban now has lost his 2/3 majority in the Hungarian Parliament. This by-election so is seen as a message to Orban and Fidesz, who have lost popularity in Hungary in recent months. According to late polls, Fidesz is now only supported by 24% of the Hungarians. (They got 48% in the last election)
See this article:
Hungarian Voters Clip Orban's Wings With By-Election Upset