To be serious for a minute
mud slinging gets us nowhere
I think working class/low/middle income people vote Tory because it is a message of self sufficiency. A low tax/small state economy looks attractive for people who don't trust the state.
Lots of people would rather they kept their own earned money in their pockets to spend as they wish rather than the high tax/big state economic model of 'give us your money and 'we' will decide how to spend it.
That's quite paternalistic really.
Of course it's idealistic though- in practice the average family couldn't afford a big hospital bill even if they were taxed less.
So the NHS becomes the sacred cow.
The rest of public services though- people like to have the 'it'll never happen to me' philosophy.
In a lot of cases it is 'turkeys voting for christmas' but few like to label themselves as the rung who need state intervention to put food on the table.
Unfortunately most voters are selfish (economics is based on this principle) and the poorest don't vote.