Jones was one of only three Liberal Members of the House of Assembly (MHA) re-elected in the 2007 provincial election. On November 15, 2007, she was named the interim leader of the Liberal Party and Official Opposition Leader, after party leader Gerry Reid was defeated in his own district. Jones became the first woman to lead the Liberal Party in the province. The party originally planned to hold a leadership convention to select a new, permanent leader in 2008, but postponed the vote twice. Jones continued to serve as interim leader during this period of time, and in December 2009, announced her intention to run for the permanent leadership when the convention was to be scheduled. On July 30, 2010, Jones was acclaimed Liberal leader after she was the only person to file nomination papers for the position.
