President Donald Trump is calling Democratic Senate hopeful Beto O’Rourke names ahead of a trip to Texas to stump for O’Rourke’s Republican opponent, incumbent Ted Cruz.

Trump tweeted Wednesday “Beto is a flake” and that Cruz “has done so much for Texas,” including creating jobs and cutting taxes, but that “O’Rourke would blow it.”

That follows O’Rourke borrowing a Trump nickname for Cruz from when the two were 2016 Republican presidential rivals, calling the senator “Lyin’ Ted” during a debate Tuesday night in San Antonio.

Trump is traveling to Houston on Monday to rally for Cruz as O’Rourke has kept the race reasonably close, even in deeply conservative Texas.

O’Rourke sharply criticized Cruz during the debate. On Wednesday, he unveiled negative attack ads, further breaking with his usual bipartisan and feelgood image.

Watched the debate last night & Beto O’Rourke, who wants higher taxes and far more regulations, is not in the same league with Ted Cruz & what the great people of Texas stand for & want. Ted is strong on Crime, Border & 2nd A, loves our Military, Vets, Low Taxes. Beto is a Flake!

— Donald J. Trump (@realDonaldTrump) October 17, 2018

Ted Cruz has done so much for Texas, including massive cuts in taxes and regulations – which has brought Texas to the best jobs numbers in the history of the state. He watches carefully over your 2nd Amendment. O’Rourke would blow it all! Ted has long had my Strong Endorsement!

— Donald J. Trump (@realDonaldTrump) October 17, 2018

(AP)