This whole leaders' debate thing is silly.
First of all, it either shows or encourages a wilful ignorance of our electoral system. I can't be certain that the people who run ITV and Sky know how it works, but I'd have thought that the broadcaster with its own dedicated Parliament channel might be able to figure it out. A debate between the party leaders is all well and good, but the thing is, I'm not a constituent of Kirkcaldy and Cowdenbeath, Witney, or Sheffield Hallam, so I'm not voting for any of these men, even if I wanted to. It's about policy, not personality; this isn't America.
(And what the heck is Sky doing showing one of these debates anyway, when they don't have nationwide coverage?)
The greater idiocy in all of this, perhaps, is the perpetuation of this nonsense about these debates being the first of their kind, as if there hasn't been at least one a week televised since at least 2000.
If the British people do not understand the electoral process, and it appears as if this is the case, then it's up to the public service broadcasters to educate them, not perpetuate the ignorance. Otherwise, this will be America.