New ad in marginal seats contrasts "hardworking families" with those "who won't work".
Here's why he's wrong.
If Labour perseveres, it might change the terms of debate on a fundamental issue.
Unlike the Chancellor, the majority of voters believe that benefits should rise in line with inflation or more.
Pegging the welfare uprating to the 50p tax rate would be an expensive decision in terms of future policy development.
Labour releases data showing that thousands of working families in Conservative marginals will be hit by the cuts.
Shadow chancellor says his party will oppose any bill that unfairly hits working families.
A jobs guarantee would allow Labour to defend benefits from a position that resonates with the public.
Osborne's benefit cuts will test whether Labour's new doctrine is more than just a slogan.