Donald Trump announced Friday that Stephen Miller will replace Susie Wiles as White House chief of staff beginning Monday, November 9. Polymarket’s Wiles Yes has jumped to 98.6 cents, leaving almost nothing left to price.
But her departure raises a bigger question: With Democrats taking control of Congress in January, how many more administration officials could Trump replace before the year ends? Prediction markets are giving us a clue to start with.
The timing matters more than it might appear.
Next Trump Administration Exit Polymarket Update
Polymarket’s market on who will leave the Trump administration before 2027 has a relatively simple rule. A Yes pays if an official leaves the administration, or if their departure is announced, by December 31. They don’t actually have to be gone by then.
Wiles is moving into Trump’s political operation, outside the federal government. That makes her departure different from someone simply moving into another administration role.
At 98.6 cents, her contract offers just 1.4 cents of upside while traders wait for resolution. She leaves as Trump’s longest-serving White House chief of staff, a notable distinction after he went through four during his first term.
The more revealing contract might actually be Kristi Noem.
Noem was removed as Homeland Security secretary in March and replaced by Markwayne Mullin. Yet her departure contract still trades at 29%.
That’s because Trump reassigned her as special envoy for the Shield of the Americas. Under Polymarket’s rules, remaining in a qualifying federal administration role doesn’t count as leaving.
It’s an important distinction for anyone betting on a Cabinet shakeup. Losing a job isn’t necessarily the same as leaving the administration.
The Senate creates a deadline
Democrats won control of both the House and Senate in Tuesday’s midterms, with the new Congress taking office January 3, 2027.
Polymarket’s market closes December 31, just three days earlier.
That gives Trump roughly eight weeks with a Republican-controlled Senate if he wants to replace senior officials and confirm their permanent successors before Democrats take over.
Wiles was an easy change to make because a White House chief of staff doesn’t require Senate confirmation. Cabinet secretaries are a different story. Their permanent replacements generally need Senate approval, making the current lame-duck session particularly valuable.
It isn’t an absolute deadline. Trump could use acting officials or wait until next year. But a replacement who might struggle to win Democratic support would have a much easier path through the current Senate.
And because Polymarket pays on the announcement of a departure, Trump could announce a change in December even if the replacement doesn’t take office until January.
That’s what makes the next several weeks so important for these markets.
Hegseth is the name to watch
Defense Secretary Pete Hegseth is trading around 40% to leave before January, down from the mid-50s earlier this week.
The initial jump came after CBS reported that Trump had been asking advisers whether Hegseth should stay following the Republican midterm losses. Florida Governor Ron DeSantis was reportedly floated as a potential replacement, with the possibility of getting him confirmed before the new Senate takes office.
The Iran war has also become part of the conversation surrounding the election losses, adding political pressure on Hegseth.
But Trump pushed back Thursday, telling reporters he had “every intention” of keeping his defense secretary. The market quickly gave back much of its earlier gain.
That leaves traders weighing two competing signals. Behind the scenes, there are reports of discussions about replacing Hegseth. Publicly, Trump continues to back him.
Democrats could also pursue investigations or impeachment once they take control in January. Outgoing Republican Rep. Thomas Massie has already pushed for Hegseth’s removal.
The problem for this particular contract is timing. The new Democratic Congress won’t take office until after the market settles, so that political pressure alone cannot deliver a Yes before December 31.
A winning Hegseth bet likely requires Trump to make the decision himself.
And if he’s going to make that decision, the outgoing Senate gives him a reason to do it sooner rather than later.
Rubio’s odds tell a different story
Marco Rubio’s departure contract briefly climbed to 24.5 cents Thursday following reports that he was considering leaving the administration.
He quickly pushed back, saying that serving through the end of Trump’s term had always been his plan. His odds returned to around 15%.
Rubio’s contract has seen roughly $140,000 in trading volume over the past 24 hours, making it the busiest name on the board.
There are other potential departures, but the liquidity becomes a problem further down the list.
Mullin trades around 23%, despite having just $3,245 in lifetime volume. CIA Director John Ratcliffe sits at 14% with only $805 traded.
At those levels, the quoted probabilities deserve some skepticism. A relatively small order can move the price considerably.
Howard Lutnick at 21% and Kash Patel at 19% are different. Both have six-figure trading volume, but neither has featured prominently in the immediate post-election reports about potential Cabinet replacements.
Volume alone doesn’t make a departure more likely, but it does give traders a more meaningful market to work with.
What happens next?
On election night, Trump told Fox News that the Republican losses had “nothing to do with my Cabinet” and said he didn’t expect to make changes.
Three days later, his chief of staff was out.
That doesn’t mean a broader Cabinet shakeup is inevitable. But it does show how quickly personnel decisions can change after an election, even when the president publicly dismisses the possibility.
The Senate calendar now adds another layer.
Trump has a relatively short window to confirm replacements with Republican votes before Democrats take control. Anyone who becomes a serious candidate for removal between now and December could see their Polymarket odds move quickly.
Wiles was the first major post-election departure, and she occupied the one senior position that didn’t require Senate confirmation.
The bigger test is whether Trump is willing to use the remaining weeks of Republican Senate control to make changes elsewhere.
The trade
Pete Hegseth Yes at 40 cents is the most compelling trade on the board.
It’s also the deepest market, with a one-cent spread, roughly $98,000 in liquidity and $29,000 traded over the past 24 hours.
The argument for buying Yes isn’t simply that Hegseth is under pressure. It’s that the confirmation calendar gives Trump a reason to make a decision before January rather than wait.
Reports of DeSantis being considered as a replacement make that possibility more concrete, especially because a successor could be confirmed in December and take office later.
At 40 cents, the contract pays $1 if Hegseth’s departure is announced before December 31. That offers 60 cents of potential profit for every 40 cents invested.
