Dismal polls put pressure on Brown
Updated on 28 September 2009
With Labour plummeting in the opinion polls, there is still much soul-searching about the future of the party and its leader.
One left wing MP has described Gordon Brown as a "dead man walking" in spite of Peter Mandelson's barnstorming speech this afternoon.
The Prime Minister will be giving his keynote speech tomorrow and even his closest advisors acknowledge his future could depend on it.
Channel 4 News reports on the prime minister's battle to reassert his authority and those waiting in the wings should he fail.
