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Republican presidential nominee Donald Trump speaks on stage at a campaign rally in Toledo, Ohio on October 27, 2016. With Donald Trump warning darkly of a plot to "steal" the White House from him next month, the specter of intimidation on Election Day, including by vigilante-style armed citizens, is now seen as a serious threat. / AFP / Jay LaPrete (Photo credit should read JAY LAPRETE/AFP/Getty Images)

Republican presidential nominee Donald Trump speaks on stage at a campaign rally in Toledo, Ohio on October 27, 2016.
With Donald Trump warning darkly of a plot to "steal" the White House from him next month, the specter of intimidation on Election Day, including by vigilante-style armed citizens, is now seen as a serious threat. / AFP / Jay LaPrete        (Photo credit should read JAY LAPRETE/AFP/Getty Images)