Austrian President Heinz Fischer easily secured a second term Sunday, deflecting a challenge by a far-right politician who had criticized the country's anti-Nazi law.

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Austrian President Heinz Fischer reacts after he easily secured a second term in Sunday's presidential election. ((Ronald Zak/Associated Press))

Fischer, a Social Democrat, won 78.9 per cent of the vote, trouncing his main rival, Barbara Rosenkranz of the anti-foreigner and anti-European Union Freedom Party, who netted 15.6 per cent. Rudolf Gehring of the tiny Austrian Christian Party — the only other candidate in the running for the largely ceremonial post — trailed with 5.4 per cent.

Voter turnout was just 49.2 per cent.

"I am extremely happy and thank the Austrian population for having so much confidence in me," Fischer said in remarks broadcast live on public television.

Rosenkranz claimed she and her family had been victims of a "witch hunt."

"It really wasn't a fair election campaign — I think everyone saw that," Rosenkranz said as her supporters clapped and cheered.

Polls had predicted Fischer would win another six-year term and the vote was being watched as a measure of far-fight sentiment in a country at times still marred by its connection to the Holocaust.

Fischer, 71, is known for caution and diplomacy. He served as science minister and held various leadership positions in his party and in parliament before initially winning the presidency on April 25, 2004.

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Presidential candidate Barbara Rosenkranz of the right-wing Freedom Party meets with her supporters in Vienna after the release of the presidential election results on Sunday. ((Ronald Zak/Associated Press))

Rosenkranz, in contrast, caused controversy by suggesting that Austria's law banning the glorification of the Nazis was not in line with the constitution and hindered freedom of expression. But she recently declared formal support for the law.

She also came under fire recently for a vague response to a question about Nazi gas chambers, but has since clearly acknowledged their existence.

The 51-year-old mother of 10, whose husband used to be part of a far-right political party that was banned for being too radical, said her comments on the country's anti-Nazi law were misinterpreted by her critics and the media.

Ferdinand Karlhofer, head of the University of Innsbruck's political science department, said the results were a blow to the Freedom Party, which had hoped to position itself for key local elections in the Austrian capital this fall.

"The [Freedom Party] is coming out of this election with hefty minus points," Karlhofer said. "They didn't get the momentum they had hoped for."

Freedom Party chief Heinz-Christian Strache, who wants to become the mayor of Vienna, initially predicted that Rosenkranz would win up to 35 per cent of the vote but later distanced himself from her.