Hungary's strongman Prime Minister Viktor Orban won a clear victory in elections, while the far-right Jobbik party increased its share of the vote.
"We can say with absolute certainty that we won," Orban told cheering supporters in Budapest. "These elections were free. Organised in a free country."
With 89 per cent of votes counted, Orban's Fidesz party was on 44.8 per cent of the vote, well ahead of the left-wing opposition alliance on 25.5 per cent.
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Gordon Bajnai, one of the leaders of the opposition alliance, called the result a "crushing defeat".
"This is a great disappointment to those who wanted a change in government."
It remained unclear, however, whether Orban's victory will be big enough for the right-winger to retain his two-thirds majority in parliament, with the latest numbers indicating he might fall one seat short.
Orban has made the most of the super-majority he won in 2010, with a legislative onslaught shaking up the media, the judiciary and the central bank.
Critics, including Brussels and Washington, have expressed concerns about vital checks and balances on key democratic institutions in the EU member state.
The fate of the media has sparked particular alarm, with state outlets merged into one tame entity and independent publications starved of advertising. All are under the close eye of a new watchdog run by Orban lieutenants.
Many of these reforms have been written into a new constitution, meaning that even if the opposition were to win, it would need a two-thirds majority to change them.