After surfing a new wave of outrage against the measure, the party can't turn back this time.
Rather than re-running the arguments of 2010, the party must start and sustain a debate about what a good, healthy economy looks like.
The Bank of England governor tells MPs what George Osborne doesn't want you to hear.
The Chancellor's claim that "the pace of fiscal consolidation has not changed" is not supported by any of the available data.
The Chancellor boasts in his Times piece that disposable incomes have risen but in the first quarter of this year they fell at the fastest rate since 1987.
By neglecting the early years we risk having to spend more playing catch-up later on.
Institutional reforms can reduce the extent to which short-term tactics trump long-term thinking.
Regardless of the actual levels of need, the poor will lose out under the Chancellor's cap.
Squeezing disproportionate amounts of public spending out of the regions will leave the country fiscally unbalanced and with regional disparities on the scale of most developing nations.
The party vowed to block further welfare cuts but the seven-day wait for benefits amounts to a £245m cut.