This coalition government is coming off the rails
No, the coalition is most definitely still ON the rails!
Firstly, the re-shuffle was more about kicking Heathrow into touch than building a new runway, whereas they are very much full steam ahead on HS2, with Gillan now "freed" from the cabinet so she can be a lone voice speaking her mind.
Secondly, for the coalition to be broken before 2015 is lose-lose for both concerned. Cameron can hold on until then in the hope there might just be a 0.0001% growth in the economy by then, as people really don't want to vote for Labour, but in the current stalemate, they will give Deadwood Ed a chance.