Bicameralism Canadian provinces had all their upper houses abolished. In Argentina, eight provinces have bicameral legislatures, with a Senate and a Chamber of Deputies: Buenos Aires, Catamarca, Corrientes, Entre Ríos, Mendoza, Salta, San Luis (since 1987) and Santa Fe. Tucumán and Córdoba changed to unicameral systems in 1990 and 2001 respectively. In Australian states, the lower house was traditionally elected based on the one-vote-one-value principle, whereas the upper house was partially appointed and elected, with a bias towards country voters and landowners. In Queensland, the appointed upper house was abolished in 1922, while in New South Wales there were similar attempts
Argentine provincial elections, 2015 Argentine provincial elections, 2015 On the 25 October elections numerous provinces also elected governors, with the new ones beginning their terms on 10 December 2015. These provinces were Buenos Aires province, Catamarca, Chubut, Entre Ríos, Formosa, Jujuy, La Pampa, Misiones, San Juan, San Luis and Santa Cruz, encompassing 11 of the country's 23 provinces. The other provinces elected governors in different days of 2015; the only exceptions were Corrientes and Santiago del Estero whose governors' terms were not due to finish in 2015. María Eugenia Vidal was elected governor of the populous Buenos Aires Province, defeating the controversial Aníbal Fernández;