NEW YORK — For the first time in a national poll, Ben Carson has overtaken Donald Trump, leading the Manhattan businessman in the CBS News/New York Times survey of Republican primary voters out Tuesday.

Carson earned 26 percent, while Trump grabbed 22 percent, within the margin of error but a reversal of longstanding polling trends. Meanwhile, Florida Sen. Marco Rubio came in third with 8 percent and former Florida Gov. Jeb Bush and Carly Fiorina earned 7 percent each. All other candidates received 4 percent or less support.

Reacting on MSNBC’s “Morning Joe” on Tuesday to those results and to four recent Iowa polls that found him trailing the retired neurosurgeon, Trump said that he generally believes in polls, having studied about them while a student at the Wharton School of Business.

“Well I think you have to understand polls. And when I was at school, when I was at Wharton, we actually had a case on polls, we had a one-month study on polls. I believe in polls, I generally believe in polls. The thing with these polls, they’re all so different, they’re coming from all over the lot where one guy’s up here and somebody else is up there or you see swings of 10 and 12 points and you know, like, immediately, the same day,” Trump remarked. “So right now, it’s not very scientific. I think it’s very hard when you have this many. … I think they say something, at least they spot a trend.”

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