The "no applause" rule imposed on the studio audience for the three leaders' debates has been widely ridiculed. The only purpose it serves is to protect the leaders from audience scrutiny.
So here's how a leader could get tonight's historic first debate off the ground with an instant plus to them:
Spend the last 5 seconds of your opening remarks stating that this rule should be scrapped, and ask the other leaders if this is OK with them.
First, this would go down well with the public. It would show a willingness to shake things up.
Second, it would go down especially well with the audience, and would warm them to you for the rest of the debate.
Third, it would immediately put your opponents on the spot: either they agree with your request, and make it look like you've shown leadership, or they oppose it, appear defensive and in need of protection from the public's reaction.
I of course hope it is Nick Clegg who deploys this opening gambit. It would also seem that he is most likely to: Paul Waugh reports that it was Labour and the Tories who insisted on the clapping ban, despite opposition from the Lib Dems and broadcasters.