House of Assembly Fifty-Fifth Parliament, First Session (55-1) 55 1 Parliament of South Australia House of Assembly published Parliamentary Procedure Parliamentary Procedure Speaker's Statement Speaker's Statement The Speaker House of Assembly Mawson The SPEAKER (11:01): I remind members that there is a joint sitting of the two houses in the Legislative Council chamber at 12.30pm today for the purpose of filling the vacancy in the Senate caused by the resignation of Senator Simon Birmingham.