Río Negro is a province of Argentina, located at the northern edge of Patagonia. Neighboring provinces are from the south clockwise Chubut, Neuquén, Mendoza, La Pampa and Buenos Aires. To the east lies the Atlantic Ocean. Its capital is Viedma. Other important cities include the ski resort town of Bariloche, Cipolletti and General Roca.
Río Negro acquired status of province on December 10, 1957; its first governor was Edgardo Castello of the Radical Civic Union (UCR). The province's voters, which have historically leaned toward the UCR, elected Front for Victory candidate Carlos Soria in 2011. Soria was the first Peronist elected Governor of Río Negro since 1973. He was killed on 01 January 2012 apparently by his wife.