Attila Mesterházy

Attila Mesterházy (born 30 January 1974) is a Hungarian politician, who served as the seventh chairman of the Hungarian Socialist Party (MSZP) from 10 July 2010 to 29 May 2014, and as Vice-President of Socialist International from 2010 to 2022. He was a Member of Parliament between 2004 and 2022. He was the party's candidate for the position of Prime Minister of Hungary in the 2010 and 2014 parliamentary elections. He was elected President of the NATO Parliamentary Assembly in December 2019, becoming the first Eastern European to hold the position, and served until the end of 2020. He founded a new party, Socialists and Democrats, in 2023 together with former colleagues, aiming to revitalise the Hungarian centre-left with a more modern, pro-European platform.