Trump’s refusal to endorse Ryan comes amid reports Trump’s campaign staff are beginning to panic. On Monday, Trump’s campaign announced the firing of two senior advisers, including longtime GOP strategist Ed Brookover, who had been Trump’s liaison to the Republican National Committee. Then, on Wednesday, a Trump campaign staffer told CNBC Trump’s staff were “suicidal” and that campaign manager Paul Manafort was unable to control Trump and was “mailing it in.” This comes as a number of top Republicans have said in recent days they would support Trump’s rival, Hillary Clinton. On Wednesday, Newt Gingrich—who until two weeks ago was considered a possible running mate for Trump—criticized Trump.

Newt Gingrich: “Trump is still behaving like as though it was the primaries and there were 17 candidates. He has not made the transition to being the potential president of the United States, which is a much tougher league. People are going to watch you every single day. They’re going to take everything they can out of context. And he is not yet performing at the level that you need to.”

Later, Newt Gingrich walked back his comments, saying he’s behind Trump 100 percent. At a campaign rally in Florida yesterday, Trump sought to assure voters his campaign is fine.

Donald Trump: “I would say right now it’s the best in terms of being united that it’s been since we began. We’re doing incredibly well. We’re leading in the state of Florida. You saw the poll. We’re leading in Ohio. We’re about tied in Pennsylvania, but I think we’re going to be leading the next time. So I think we—I think we’ve never been this united. And I just want to thank everybody for being here. This is incredible.”