The Budget goes through (and a good thing too), and in the process the Labour Party have shot themselves in the foot with a certain degree of aplomb. Having listened to the speeches, the decrying of the Budget by Andy Kerr and others made it clear exactly where their sympathies lay, and how much better they could do were they in power today (but not over the last eight years, obviously).
Hence to the vote - SNP, Tories, Green and Margo, presumably - sided for the budget, and instead of doing the arithmetic and staging a protest vote they knew they were going to lose, the idiots - the absolute braindead idiots - sat on their hands, in a show of decisiveness.
Given the option of shaking a fist and worrying the Government about their inherent power in opposition, they have managed to bolster the SNP benches, and become a laughing stock in the process.
I suspect the decline may be terminal ......