Known as a prominent Eurosceptic in the UK since the early 1990s, Farage campaigned for the United Kingdom's withdrawal from the European Union. Farage was a founding member of UKIP, having left the Conservative Party in 1992 after the signing of the Maastricht Treaty, which furthered European integration and founded the European Union. After campaigning unsuccessfully in European and Westminster parliamentary elections since 1994, he was elected MEP for South East England in the 1999 European Parliament election. He was re-elected in the 2004, 2009, 2014 and 2019 European Parliament elections. In the European Parliament, he served as the President of Europe of Freedom and Direct Democracy (EFDD) where he was noted for his speeches, and as a vocal critic of the euro currency.