I know this is suggesting one answer to my own question but could be that both parties are as selfserving as each other. Hariet Harmen said recently that the great majority of MPs were dedicated to serving the public, when in fact the reverse is the case. What is the point in even voting next time except as a protest vote by voting for a minority party.
Possibly because at this stage of the pre-election campaign, the Tories have yet to unveil a real killer punch. I get the feeling that people want a change from Labour, but the Conservatives haven't really given them a reason to vote FOR them (only AGAINST Labour - which isn't quite the same thing).
Your answer modeller was about the gap diminishing, so that would suggest that a majority of Tory voters are feeling disillusioned I doubt that's the case
As Bill Clinton said "It's the Economy stupid" (sorry that's what *he* said)
There are a lot of people who work in the public sector
There are even more who work for companies who derive a lot of business from the public sector.
People think that the Tories will make massive cuts here and there will be a lot of job losses.
They want a change but they're scared of what Cameron and Osbourne will do
Being as both parties are reluctant to spell out what they will really do to solve the economy problems. It may be their weak attitudes to other problems which require a more positive approach e.g. Crime, Immigration , the EU etc. People appreciate a strong leaders and at the moment we haven't got any.