Donald Trump is boasting that he's got some big news to reveal about President Obama.

"Something very, very big concerning the president of the United States,” he said. “It’s going to be very big. I know one thing — you will cover it in a very big fashion.”Trump, who said he will announce the news on Twitter “sometime probably Wednesday,” suggested it could “possibly” impact the election.

What do you think the "big news" is? How big would a scandal have to be to change your mind about a Presidential candidate?