Story highlights Donald Trump said Sen. Ted Cruz of Texas is a "nervous wreck"

The brash billionaire made his comments in an interview Wednesday with CNN's Anderson Cooper

(CNN) After racking up three consecutive primary victories, Donald Trump is feeling bullish on his chances of capturing the Republican nomination.

Sen. Ted Cruz of Texas is a "nervous wreck" and Florida Sen. Marco Rubio could be in for a rough night at the next Republican presidential debate Thursday, Trump said in an interview Wednesday with CNN's Anderson Cooper.

As for himself, Trump said he will "pick up a lot" of the support his current rivals enjoy as the field narrows and said he thinks he could become the presumptive Republican nominee before the Republican nominating convention this summer.

"I don't see it going to the convention. I think we're doing very well," Trump said, adding that he is "looking forward to a good week next week" when a cluster of states vote in the Super Tuesday primary contests on March 1.

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