The POD is no later than 1974. Blair joined the Labour Party after he graduated from Oxford University in 1975.
This is not a diffucult challenge but I am interested in people's scenarios for Blair's rise to Prime Minister, and how it fits in with Prime Ministers in OTL, and ideas for leaders of the Labour Party.
Also assuming that Blair is no longer Prime Minister now in 2011, what would be his reputation, and what would be doing now?