apparently the majority of the British people think he's still worthy of a third term in office.
That is wrong on a number of levels.
a) The best you can say is that a majority of those who voted thought he was worthy of such.
b) Since the election of a Prime Minister is integrally linked to the election of local MPs all it really shows is that the majority of those who voted wanted to retain a Labour government.
c) Given the percieved likelihood of Gordon Brown taking up the position of Prime Minister, subsequent to Tony Blair's stepping down, there is not much basis for representing the victory of the Labour government as any sort of personal mandate for Blair.
TTFN,
WK