As Boris Johnson secured victory in the Tory leadership race, ensuring his place as the country's next prime minister, questions were immediately being asked about who would gain the most important seats around the Cabinet table.
Mr Johnson is set to make a final decision on the key appointments of his reshuffle before announcing who will take over the top posts at 4pm on Wednesday.
And betting firm Oddschecker, which collates odds and offers from leading bookies, has calculated that current Home Secretary Sajid Javid is odds-on favourite to move into Number 11 Downing Street to succeed Philip Hammond as Chancellor of the Exchequer.
Mr Hammond said he couldn't support the new PM's pledge to deliver Brexit by October 31 - even without a deal - but there are a queue of candidates willing to take charge of the nation's finances whatever the circumstances.
Following Mr Javid in the betting is Liz Truss, who is currently Chief Secretary to the Treasury, who is at 3/1, and Jacob Rees-Mogg, who is more of an outsider at 6/1.
Money has also been placed on Matthew Hancock, Andrea Leadsom and Jeremy Hunt, but none of these are seen as likely appointments.
Former International Development Secretary Priti Patel, a keen supporter of Mr Johnson, is favourite to be Home Secretary at 2/1, closely followed by Michael Gove and Liz Truss at 6/1.
Whoever takes the main posts, bookies don't think Mr Johnson will be spending a great deal of time at Number 10.
Odds suggest he may not even see out 2019 and he is 9/4 to be out by the end of the year.
Punters are backing the newly-appointed PM to be leave in 2019 too, with 24 per cent of all bets in the market backing an early exit.
The next most likely exit date is both 2020 and 2022, which are 5/2 to be the year that he leaves the position.
Oddschecker spokesperson Callum Wilson: "Based on the early reaction to his appointment, it's unlikely to be an easy ride for the former Foreign Secretary. Bookmakers give it a 30.8 per cent chance he's out of Number 10 before 2020."
