I won't quote from it, it's good, but a reply by 'valleysmam' caught my attention:
"The ideas he [Cameron] puts forward have been around for ever. UK Constitutional reform - his party has consistently blocked votes many times in the House of Commons; why the sudden need to be seen to have his hand up on reform. Clever words from a former PR man aimed at deflection from the outing of his party on serious expenses manipulation.
David Cameron needs to convince his own supporters of the need for reform , not "Guardian" Readers.Do you seriously think the Tory blues would go with any of this.No way, clever attention grabbing - but nothing else."
Indeed, that is the truth of the matter.