Not a fundamental game changer to my mind, but David Cameron will be leaving the Leeds leaders' lashing the happiest. He put in his best TV performance at the last, as he did in 2010.

Ed Miliband probably got the sharper end of the audience's questioning. Then again, he is the challenger for the job of prime minister, and should be able to deal with whatever the campaign throws at him.

At one point he was on the ropes from questioners who did not really want to hear an answer from him on Labour's economic record.

But he failed to respond with a key defence to whether the previous Labour government overspent: that George Osborne was matching Labour spending plans.

He went for a flat denial that Labour has overspent.

The PM appeared more prime ministerial and his performance was reflected in the instant poll victory 44% to 38%.

But given the unfortunate stumble at the end, I'm sure Labour would have taken being 6% behind.

Naturally staunch supporters of Labour will not agree with 44%, and staunch Tories with 38% for Mr Miliband.

That is not the point. Mr Miliband might have done a bit more to change something a little toxic for Labour.

He ruled out unequivocally any confidence and supply deal with the SNP.

The "no deal" approach might help neutralise the effectiveness of the Conservative Salmond thief posters popping up in English marginals.

But the idea that he would rather "not be in government" than "do a deal with the SNP" will come at a cost in Scotland.

How many people will have changed their mind as a result of the last TV showcase?

Labour supporters will have heard a shifty cruel prime minister wriggling over further cuts.

Conservatives will have heard a weak Opposition leader failing to self-flagellate over Labour's historical record.

Nick Clegg was unlucky to go last and seemed to poll badly, but I wouldn't be surprised if he achieved his objectives in appealing to the core of votes in approximately 30 seats.