Kristina Kerscher Keneally (born 19 December 1968) is an American-born Australian politician. She was the 42nd Premier of New South Wales. On 3 December 2009 the Australian Labor Party caucus elected Keneally to replace Nathan Rees as leader and she became the first woman premier of New South Wales. The Labor Party lost the 2011 state election, and Barry O'Farrell of the Liberal Party became the new premier on 28 March 2011.