Clinton: Trump's election talk poses 'threat to our democracy'
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"This poses a direct threat to our democracy," Clinton, the Democratic nominee, said during a rally with her running mate, Sen. Tim KaineTimothy (Tim) Michael KaineA lesson of the Trump, Tlaib, Omar, Netanyahu affair Warren's pledge to avoid first nuclear strike sparks intense pushback Almost three-quarters say minimum age to buy tobacco should be 21: Gallup MORE (D-Va.), in Philadelphia. 
Clinton remarked that while she has lost elections and "you don't feel good the next day," that "we have always had a peaceful transfer of power."
"That's the difference between democracy and dictatorship. That is the difference between the rule of law and the rule of strong men," she said. 
She called on her supporters to demonstrate that "the United States is bigger than Donald Trump."
President Obama, Vice President Biden and other top Democrats have slammed Trump after he declined to say in the third presidential debate of 2016 whether he'd accept the election results.
Trump said Thursday he would accept the election results "if I win," adding later that he would also accept a "clear" election result.