The tycoon, who has made frequent interventions in the election, criticising the president and calling on him to release his college records, wrote: "We can't let this happen" and suggested a march on Washington.
"We can't let this happen. We should march on Washington and stop this travesty. Our nation is totally divided!"
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He went on: "Let's fight like hell and stop this great and disgusting injustice! The world is laughing at us." And continued to tweet that the country was in "serious and unprecedented trouble … like never before".
"This election is a total sham and a travesty. We are not a democracy!"
He criticised the electoral college system, tweeting: "The electoral college is a disaster for a democracy."
Trump suggested the House of Representatives, which is still controlled by the Republicans, should "hold our country together", writing:
"Hopefully the House of Representatives can hold our country together for four more years … stay strong and never give up!"
He also suggested representatives "shouldn't give anything to Obama unless he terminates Obamacare". – © Guardian News & Media 2012