Below are the odds for who will win the most seats in the next UK general election.
| Party | Odds | Probability |
|---|---|---|
| Reform | 10/11 | 52.38% |
| Labour | 11/4 | 26.67% |
| Conservatives | 5/1 | 16.67% |
| Green | 20/1 | 4.76% |
| Liberal Democrats | 50/1 | 1.96% |
| Advance UK | 100/1 | 0.99% |
As of 20 December 2025, according to the odds, the favourite to win the most seats is Reform, best priced at 10/11 with Bet365.
The odds mean that the probability for Reform to win the most seats is 52.38%.
In the 2024 UK General Election, Kier Starmer's Labour Party won the majority of seats (411) with 33.7% of the vote share.
In the 2019 UK General Election, Boris Johnson's Conservative government won the majority of seats (365) with 43.6% of the share.