1 Rishi Sunak will remain Prime Minister until the next General Election.
2 The government will go the full term or close to it. No opportunities will arise for a favourable early election.
3 Keir Starmer will be our next Prime Minister after the election
4 He will win an overall majority and will not rule as a part of a coalition
5 He will be Prime minister for at least one full term. His majority will comfortably cover any by-election losses. Labour rarely throw out their leaders.
I'm not saying that all this is certain, just that this is the default expectation. If any of it doesn't happen it will to some extent be an upset.
Anyway I'm not one of Starmer's greatest fans to put it mildly but this, Labour leader calls for charitable status to end for private schools is a good policy.