In Washington DC, the home of US politics, many businesses have boarded up their windows in preparation for possible unrest on or after election day.
Hundreds of National Guardsmen are also on standby in the American capital, as well as in other states – including Alabama, Arizona, Delaware, Iowa, Illinois, North Carolina and New Mexico.
Metal fences began to be erected outside the White House from as early as the beginning of October – the same has since happened near other DC buildings, including the Capitol.
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