The public, as an entity, are thick and very easily manipulated by things they don't understand or aren't familiar with. It's basis off which advertising works so the public prove nothing to your points.
Of course it's going to be "oh we're in the shit, it must be the Government's fault, they're the one's responsible for the economy - let's vote for this party that are making all the right noises and are going with the simple, first logical solution." Austerity has proved to be a good call at the time, but that was stage 1 and the Tories have continued stage 1 for 10 years whilst commissioning things that suit them, not the people.