 In particular, the phrase "waka-jumping" entered the public consciousness in 1998 when then-Prime Minister Jenny Shipley expelled the New Zealand First party from the ruling coalition government, and several New Zealand First MPs resigned from the party and stayed loyal to the government.In response to these defections, the Electoral Integrity Act was passed in 2001, which later expired in 2005.A proposal to replace the Act in 2005 failed.