<P> In 2005, this was the case in the 60 - seat National Assembly for Wales, where Labour lost their majority when Peter Law was expelled for standing against the official candidate in the 2005 Westminster election in the Blaenau Gwent constituency . When the Assembly was first elected on 1 May 2003, Labour won 30 seats, Plaid Cymru won 12, the Conservatives won 11, Liberal Democrats won 6, and the John Marek Independent Party won a seat . </P> <P> When Dafydd Elis - Thomas (Plaid Cymru) was reelected as the presiding officer, this reduced the number of opposition AMs who could vote to 29, as the presiding officer votes only in the event of a tie and, even then, not on party political lines but according to Speaker Denison's rule . Thus, Labour had a working majority of one seat until Law ran in Blaenau Gwent . </P>

Assembly or parliament in which no party has got clear majority