Former New York governor and Republican presidential candidate George Pataki announced on Twitter that he will not vote for the GOP if his rival, Donald Trump, won the nomination. As expected, Trump responded with a bomb after Pataki sent multiple tweets denouncing Trump’s campaign.

And, here’s Trump’s response. Someone should really take Twitter away from presidential candidates.

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Richard Eskow is host and managing editor of The Zero Hour, a weekly radio program produced by We Act Radio. He was the senior writer and editor for the Bernie Sanders presidential campaign. Richard has written for a number of print and online publications, was a founding contributor to the Huffington Post, and is a longtime activist. He is also a Senior Fellow with the Campaign for America’s Future.