The Labour leader fears that being explicit would reinforce his party's profligate reputation.
Former Labour leadership challenger says bloc of 30-40 left-wing MPs would force party to end austerity if it won.
The Labour party launched its campaign today: what did we find out?
The Labour leader reprised the positive message of his 2013 conference speech: "Britain can do better than this" as he launched his party's general election campaign.
The Labour leader easily exceeded expectations and eroded the PM's advantage on leadership.
The SNP's stance and the Tories' missteps mean Miliband is in the strongest position to become prime minister.
The Labour leader was caught unawares by the PM's promise not to increase the tax.
Rochdale Labour MP, Simon Danczuk, said that Labour's north London elite view of the world doesn't play in Rochdale, Rotherham, Rugby - or anywhere else begining with an "r" outside the M25.
The Labour leader has responded to the Chancellor’s final Budget this parliament.
A new proposal from Downing Street has thrown the debates into confusion.