Story highlights Trump tweeted Tuesday morning, "Prediction: Rand Paul has been driven out of the race by my statements about him-- he will announce soon. 1%!"

On Monday, Paul called Trump a "clown" on CNN's New Day.

Washington (CNN) Just a day after Rand Paul said he'd outlast "clown" Donald Trump, the real estate mogul is firing back, using his favorite way to attack his fellow GOP candidates: Twitter.

Trump tweeted Tuesday morning, "Prediction: Rand Paul has been driven out of the race by my statements about him-- he will announce soon. 1%!"

Prediction: Rand Paul has been driven out of the race by my statements about him-- he will announce soon. 1%! — Donald J. Trump (@realDonaldTrump) September 29, 2015

He tweeted again, "I hope when Rand Paul gets out of the race—he is at 1%--his supporters come over to me. I will do a much better job for them."

I hope when Rand Paul gets out of the race—he is at 1%--his supporters come over to me. I will do a much better job for them. — Donald J. Trump (@realDonaldTrump) September 29, 2015

Paul told CNN's Wolf Blitzer on Tuesday that it's "silly season anytime Donald Trump opens his mouth" after asked about Trump's Twitter attacks.

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