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US Republican candidate Richard Nixon (1913 - 1994) with his running mate Spiro Agnew during the presidential election campaign, USA, October 1968. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)

US Republican candidate Richard Nixon (1913 - 1994) with his running mate Spiro Agnew during the presidential election campaign, USA, October 1968. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)