Latest Polling results

The third highest polling candidate in the Republican primaries is former Florida Gov. Jeb Bush with just 8% of support. In past polls, Bush had been the pack's frontrunner, with 22% majority support back in June.

Until recently, Carson wasn't the center of Trump's political attacks, which some say has helped him rise in the polls since the first Republican debate Aug. 6. Now, the tides are changing as Carson becomes a clear threat to the Trump lead that has continued to climb since the business mogul's campaign announcement June 16.

During a campaign event Sunday afternoon in Iowa, Trump criticized Carson for what he calls a lack of leadership: "He's not a dealer, he's not a negotiator, we need to bring wealth back into our country. Ben can't do that .. I don't think Ben has the energy, Ben is a nice man, but when you're negotiating against China, we need people that are really smart, that have tremendous deal-making skills and that have great, great energy."

Carson has gone on the offensive side with Trump in recent weeks as well, questioning his religious faith: "By humility and the fear of the Lord are riches and honor and life and that's a very big part of who I am. I don't get that impression with him ... Maybe I'm wrong, but I don't get that."