Giddy atmosphere in the Commons after election may not last

After such an unexpected election result, the Commons was in a giddy mood.Conservative MPs appear to be in a more forgiving mood, however, after the Prime Minister's "May-a-culpa" at the 1922 Committee the previous evening.For the past two years, most Labour MPs have sat sullenly, silently and grim-faced during the Labour leader's often-plodding performances at Prime Minister's Questions and other big set-piece debates.