Cameron rearranges the deckchairs on his Titanic

So David Cameron has rearranged the deckchairs on his Titanic. The big question though come the next election, will be why any voter should believe a word that either of the coalition parties says. First, there was the Lib Dems going back on their manifesto commitment on tuition fees, now it seems the Tories are set to do a similar volte face on the third runway at Heathrow. Not to mention the NHS reforms that were not mentioned in either parties manifesto. Given these betrayals, it can only be a matter of time before this coalition vessel sinks beneath the waves of growing voter discontent?