Unite leader Len McCluskey has urged Labour to prepare for an early general election because of the strength of public feeling against the austerity measures imposed by the Government.
McCluskey also warned that there will be more industrial action over pay, pensions and cuts to public services.
More top news
Rain will spread eastwards across southern areas tonight. Clear and frosty in the north.
Political leaders will go head-to-head at ITV's studios in MediaCityUK in Salford, ITV has confirmed, as the set for the event is unveiled.
More than 100 people claiming to represent working people across Britain have signed a letter backing Labour in the general election.