Michigan Democratic Congresswoman Haley Stevens.
Haley Stevens, Abdul El-Sayed's former primary challenger for the Democratic Senate nomination in Michigan. GETTY IMAGES

President Donald Trump and other Republican figures appear to be preparing for a Democrat victory in Tuesday's midterm vote; rather than outright refuting the possibility, reports are emerging of members of the current administration recognizing that Congress could well be Democrat-run after Tuesday.

"Well if that happens, I guess I'll become Mr Veto ... and then at some point we'll probably make deals ... this wouldn't be the first time. You'll have a president and he won't have the House or the Senate. They'll be sending stuff up, you veto it and eventually after a month or two of getting all vetoed ... they come over and you make a deal," Trump told FOX News in a clip aired on Sunday.

Reuters also revealed that the White House has been preparing for a Democrat win for months; White House officials have reportedly made contingency plans to keep the president's agenda advancing by looking into ways that Trump might "push the limits of his authority and ... defend those decisions in court."

If the Democrats do win, Trump is expected to make much greater use of his executive powers.

Defense Secretary Pete Hegseth is also preparing for increased congressional scrutiny, The Washington Post reported, as Democrats are allegedly planning to launch investigations into the high-ranking official in a bid to oust him from office or force Trump into dismissing him.

Anonymous sources within the GOP have gone further than Hegseth and Trump, with one senior Republican strategist telling Politico that Tuesday "could be quite a brutal evening ... once the dominoes start falling it becomes hard to stop them."

Polls show that the Democrats are likely to take the House on Tuesday and are increasing their chances of flipping the Senate too. The early voting figures don't look promising for the GOP either, as turnout amongst Democrats is outpacing that of Republicans by significant margins.

Republicans down, but not out

These unfavorable polling figures notwithstanding, Republicans continue to campaign hard ahead of Tuesday.

Republican Michigan Senate candidate Mike Rogers' campaign in particular gained considerable momentum on Sunday after a shock endorsement by Michigan Democratic Congresswoman Haley Stevens.

Stevens, who lost the Democratic primary to Mike Rogers' opponent Abdul El-Sayed, had been involved in a high-profile dispute with El-Sayed over the latter's failure to condemn an ad blaming high prices on U.S. aid to Israel. El-Sayed's campaign was not affiliated with the ad.

The issue of the U.S.-Israel alliance was a key point of contention in the primary between the two Democrats. Stevens' campaign even received millions of dollars worth of funding from the American Israel Public Affairs Committee (AIPAC).

Stevens had nevertheless consistently and repeatedly said that she would support her fellow Democrat until Sunday; Maryland Democrat Jamie Raskin even claimed that Stevens had told him as late as Saturday night that she would back El-Sayed.

Instead, Stevens appeared at an event with Rogers in Detroit on Sunday, when she revealed that she would be supporting the Republican. She had initially been scheduled to campaign with El-Sayed in the same city on the same day.

Keeping the Michigan Senate seat will be crucial in helping the Democrats re-establish control of the Senate, where Republicans currently hold a 53-47 majority.

Stevens' endorsement of Rogers quickly became of national importance, and seemed to breathe life into Republicans' campaign messaging nationwide.

"Wow, this is BIG! Congresswoman Haley Stevens, a Highly Respected Democrat ... has just ENDORSED Mike Rogers for Senate! Her following is huge, and the level of respect from the People of Michigan, especially our African American and Jewish populations, is virtually unparalleled," Trump said in a Truth Social post on Sunday.

Trump's social media post praising Stevens' endorsement of Mike Rogers.