It's interesting that Labour's approach to the election has been identical to all other parties - "If we are elected we will do this to sort things out ..."
which rather misses the point that after 11 years in government, they should have had processes in place to prevent and or sort the issues out then!
How can they come forward with an approach that suggests that they will come in a sort everything out - far enough for the other parties - when they are the incumbent government and have been in the front row while the deficit was growing / expenses scandals were brewing, and so on.
Politicians are supreme optimists. They truly believe that they have the answers - even to problems that they have personally created. That is what makes them want to govern.
it is possible that the next government will have to make those decisions that curb the deficit, and make them unelectable in the process, but they can rely on the notriously short memory of the electorate to start everything from scratch - if a sufficient gap is left before they hold another election.