Ahead of the final presidential debate, one of Donald Trump's most vocal opponents went on a Twitter rampage targeting the Republican presidential nominee.
U.S. Sen. Elizabeth Warren sent out a series of tweets in response to Trump's recent allegations that the election is rigged in favor of Democratic nominee Hillary Clinton.
"Give me a break, @realDonaldTrump," Warren said in her first tweet Wednesday. "You're not losing because it's rigged. You're losing because we see through your creepy bullying."
Warren went on to say that anyone with kids knows that whining about imaginary cheating is "the last refuge of the sore loser," echoing President Barack Obama's comments from Tuesday. She added that Trump can't expect to win when he is running a campaign based on hating women, African Americans, Muslims and immigrants.
"It's not rigged, @realDonaldTrump. You're losing fair & square. Put on your big-boy pants because this is what accountability looks like."
This election cycle, Trump has called Warren "goofy" and "Pocahantas," a skeptical reference to her Native American heritage.
Trump and Clinton will debate at 9 p.m. Wednesday at the University of Nevada, Las Vegas.
Warren is scheduled to campaign with Clinton in New Hampshire on Monday. Details of their visit have not yet been released.