The July 2018 Australian federal by-elections, known colloquially as Super Saturday, were five by-elections held on 28 July 2018, to fill vacancies in the Australian House of Representatives caused by the resignations in May 2018 of five MPs.[1] Three MPs of the Australian Labor Party and the Centre Alliance's sole MP resigned due to dual citizenship concerns after the High Court ruled on 8 May 2018 that Senator Katy Gallagher was ineligible to have been elected to the Australian Senate for being a dual citizen, in similar circumstances to four of the lower house MPs.[2] Labor MP for PerthTim Hammond resigned for family reasons on the same day, causing the first time ever that five by-elections would be held on the same day in Australia. All sitting MPs apart from Hammond re-contested and won the ensuing by-elections.[3]