Miliband needs an alliance for change - Greens, social liberals and trade unions.
Far beyond calls for a "responsible capitalism", Miliband should push for a "one nation market" that can really benefit the many, rather than the few.
The party's lead over the Tories rises from nine points to 14 in the first poll since the Labour leader's speech.
Labour leader says he will attend anti-austerity march on 20 October.
There is a tension between Miliband's centrist language and his left-wing policies.
"We must be a One Nation party to become a One Nation government, to build a One Nation Britain."
The Labour leader delivered his most confident and effective speech to date.
"An audition before the country for the post of Prime Minister."
Welfare spokesman Liam Byrne says that benefits to the elderly will need to be "looked at".
Labour leader promises new vocational qualification and implicitly contrasts his schooling with Cameron's.