A few very quick observations on tonight's two leaders' specials -
1) Whoever is advising Ed Miliband on how to get back into the game in Scotland is giving him terrible advice. You don't do it by openly blackmailing voters and telling them that you, as a Labour leader, will deliberately let a Tory government in unless they do what you want. This is Scottish Labour's very own "1979 moment" - and if they don't backtrack very quickly, they may never recover from it.
2) David Cameron boasted - literally boasted - about "getting rid" of 20,000 administrators in the NHS. However useless he thinks those jobs were, they were real jobs providing people with real livelihoods. I thought it was supposed to be so unconscionable to get rid of jobs in any circumstances, and for any reason, that we simply have to keep inhuman weapons on the Clyde forever as a job protection scheme?
3) The "2017 scenario" which might lead to Scottish independence if Britain leaves the EU seems to have been firmly reignited tonight. Cameron insisting that there will be no Tory-led government without an EU referendum, and Miliband effectively ruling out a Labour government if it requires SNP support, significantly increases the chances that the referendum will indeed happen.
4) Nick Clegg started rambling utter nonsense about how no-one was going to be Prime Minister next week, and then suddenly seemed to recall that there constitutionally has to be one. He contrasted his approach to Cameron and Miliband by saying that the result the voters deliver has to be respected, and that everyone has to act responsibly within that framework. But the reality is that he's been just as irresponsible as the others - by ruling out forming any government that is reliant in however informal a way on SNP support, he's effectively ensuring that there are a wide range of arithmetical scenarios in which it will be virtually impossible for a stable government to emerge.
5) Clegg said that he would downscale Trident from four submarines to three, because its purpose is no longer to "flatten Moscow at the press of button". Er, Nick, I don't know how to break this to you, but if you no longer want to flatten cities at the press of a button and mass-murder millions of civilians, the correct number of submarines is not three, but zero. That's what nuclear missiles do, you see. They're quite limited in their application - you can't use them to tickle people's feet.
6) I burst out laughing when the young man in the audience addressed Nicola Sturgeon as "Madam First Minister". I think the reason it seemed so incongruous was that there just didn't seem to be the same distance between her and the audience that was there when the three London leaders spoke.