The 2007 floor crossing window period in South Africa was a period of 15 days, from 1 to 15 September 2007, in which members of the National Assembly and the provincial legislatures, and municipal councils were able to cross the floor from one political party to another without giving up their seats. The period was authorised by the Tenth Amendment of the Constitution of South Africa, which scheduled regular window periods in the second and fourth September after each election. The previous general election had been held on 14 April 2004, and a previous window period had occurred in September 2005.