Clearly someone at Lib Dem HQ thought it would be a great wheeze for poor old Cleggy to show that he was human after all and encouraged the New Statesman to despatch the fragrant Jemima Khan to do a breathless, damp-gusseted interview with him. This was not wise. It exposed a fundamental flaw that politicians are wise to keep quiet about. Cleggy likes to be liked.

The trouble with the Lib Dems is that they have always outwardly appeared to be the wide eyed, adorable fluffy kittens of British politics, while on the ground they can be the dirtiest street fighters in the business with the moral compass of an Algerian rent boy on crack.

The difference between him and Cameron is that Cameron knows what it is really like to be hated. He was a bag carrier for Norman Lamont during Black Wednesday and was special advisor to Michael Howard, when there was something of the fright about him. So he is used to being as popular as a Jehovah’s Witness at a blood bank. His political life has been forged and tempered in the seemingly eternal fires of Tory vilification. So does he give a toss about the personal attacks heaped upon him by Balls and MiliEd? Of course not.

So Cleggy is going to have to pretend to grow a thick skin very quickly. Because it won’t be long, perhaps this Sunday, before carefully planted rumours will emerge about his health and worse; his state of mind. It was David Tennant in Doctor Who who said to Prime Minister Harriet Jones that he could destroy her with four words. And yes, the simple phrase “Isn’t she looking tired”, did the trick. 

Most politicians have feet made of enough clay to keep Grayson Perry in business for a lifetime. And it’s no bad thing. We like our representatives to have a few rough edges; a few redeeming defects. It’s the ones who give the impression of having just entered holy orders that have to be carefully watched. For those are the ones who are secretly shagging the Royal Corgis.        

So what should Cleggy do? Appear on Piers Morgan and light his farts? Not a good idea. He should just laugh in the face of the jibes. He may be dying inside, but he mustn’t show it. Because these personal attacks will seem like words of endearment compared to what will be served up in May.

But although Labour are having fun treating the Lib Dems as sort of upmarket contestants on the Jeremy Kyle show they are bordering upon seeming cruel. Cameron got pretty close to it by baiting Gordon Brown to the point that the public began to take pity on him. So if Labour strategists have any sense they’ll try and keep personal insults to a minimum. Because it won’t be long before the public will begin to feel that attacking Clegg is like strangling the Andrex puppy.

And it is in Cameron’s interest to keep Cleggy in good health, brimming with confidence, with a bellyful of fire. Because should the unthinkable Number 11 bus come along, the man a heartbeat away from the Deputy Prime Minister is Simon Hughes. Now that would give Cameron sleepless nights. 

Tags: David Cameron, Liberal Democrats, Nick Clegg