Donald Trump’s signature mode of going off-script to air controversial grievances in his rambling speeches has helped him win two national elections.

But it’s also a habit that can unsettle GOP operatives and politicians alike, especially when it threatens the electability of candidates other than the President. 

In the lead-up to Trump’s big primetime speech on Thursday night, sources tell the Daily Mail that some Republican allies, even senators, are feeling heartburn about what the President might say. 

Though many voters no doubt want to hear about the war in Iran, Trump himself has hinted that allegations of election fraud may be central to his speech, and in particular, a pair of electorally important Democratic senators.

Trump will deliver a primetime address to the nation on Thursday night but what he’ll exactly say has sparked an internecine White House war

‘What we’re going to talk about Thursday, it doesn’t get bigger,’ he said to reporters in the Oval Office in Wednesday. ‘Because without free and fair elections, you don’t have a country.’

In this Thursday’s edition of our DC Insider newsletter, find out about the factional battle playing out inside the White House that’s reverberating on Capitol Hill, the effort to calm nervous Republicans and how Bill Pulte and Tulsi Gabbard might be factoring into Trump’s message. 

DC Insider is the Daily Mail’s sharp, witty and well-connected guide to Washington.

Delivered to your inbox every Thursday afternoon, it is packed full of exclusive reporting, juicy gossip too hot to publish anywhere else, behind-the-scenes color and the stories everyone is really talking about.

Politics is fast. We’re faster. 

Join us to become a DC Insider with a front-row seat at the center of American politics.