The ruling party, the conservative ÖVP, will be the second largest with 26 percent, while the social democratic SPÖ is expected to land on 21 percent of the votes, according to the public service company ORF.
The Greens get 8 percent, while the liberal Neos reach 9 percent.
If the result stands, it means that FPÖ has gained almost 13 percentage points since the country's last parliamentary election in 2019, while ÖVP has lost 11 percentage points.
Unclear path forward
We have always said that we are ready to lead a government, we are ready to drive through this change in Austria, side by side with the people, says FPÖ leader Herbert Kickl.
Kickl wants to become the country's new federal chancellor. But the path to getting there, and whether it will be possible, is unclear despite the election victory.
Before the election, no parties have said they want to be part of an FPÖ-led government. On the other hand, it has been hinted that ÖVP could join a possible coalition with SPÖ and Neos to avoid a potential FPÖ rule.
Congratulations
FPÖ is still met with congratulations from other European leaders from the far-right. Among others, Geert Wilders, party leader of the Dutch anti-immigrant Freedom Party (PVV), and the French far-right party National Rally (RN) party leader Jordan Bardella praise the Freedom Party (FPÖ) on social media after Sunday's election.
More than six million Austrians have had the opportunity to vote in the parliamentary election.
