[Pierre]

Since when did the broadcasters decide the terms of hoe the election will be fought.

All they are, are broadcasters. They can't tell the leaders of the parties the terms of the debate.

Now they can " invite" leaders to debates and the can " suggest" the format, but anyone is free to decline the invitation of they don't the format or if the suggested time of the date doesn't fit in with their plans.

Cameron is well within his rights to set the terms of where, when and how he debates and I would support him in that rather than see him genuflect to the likes of the BBC and SKY