Forget Meacher and McDonnell - the only credible left challenger is John Denham

So the worst-kept secret in politics is out. Michael Meacher is to challenge Gordon Brown for the Labour leadership, claiming only he can unite the left." The reaction from the John McDonnell camp was suitably pithy. "We have been expecting Michael's announcement for over nine months. It doesn't change things."

Indeed it doesn't. Both men are completely unelectable either as Labour leader or as Prime Ministers and will be trounced by Brown if they ever get on the ballot paper - McDonnell because he is an unreconstructed throwback to the days of the Loony Left, Meacher because he is an ageing Faust who compromised every political ideal he ever held in his long and ultimately fruitless attempts to hang onto ministerial office.

That the election could throw up two such unpromising candidates is symptomatic of the plight of the left at this time. McDonnell seems a perfecly amiable chap, and can at least point to a principled voting record. But Meacher has zero credibility with the left as a result of his decision not to resign over the Iraq War - a decision he now says he bitterly regrets.

If left-leaning MPs are looking for a credible candidate to stand against Brown, as opposed to a token standard-bearer who will simply make Gordon look good, they should look no further than the one man in their midst who did resign over the war - John Denham.

Unlike Meacher or McDonnell, Denham is a sensible leftie who in most respects holds perfectly mainstream Labour Party views, notably on the importance of tackling inequality. He also, of course, has relevant recent high-level ministerial experience as a minister in the Home Office.

John Denham is a man of high principle who in my opinion would make an admirable Prime Minister. Unfortunately he seems to have no intention of standing. Unless he can be persuaded to do so, the left should stop wasting its time - and the Labour Party's money - and get behind Gordon.

That petition, and some other ways to cut congestion

The last time I posted anything on road pricing, I was urged to "get a grip" by esteemed blogger Tim Worstall who reckoned I was paying insufficient attention to the "polluter pays" principle. Fair cop, guv, but what I was really seeking to point out was merely that the Government had paid the public transport network insufficient attention during its 10 years in power.

I didn't, in fact, sign the Downing Street petition against road pricing which has caused all the kerfuffle, for the simple reason that I think it could be part of the solution to the congestion in some large cities. But I don't support a national road pricing scheme for much the same reason I don't support ID cards - it could only work with the imposition of "spy in the cab" technology which would give the Government even more knowledge about, and therefore power over, our movements.

There are to my mind much more practical and far less politically problematic ways to cut congestion, and I will name two here. First, by radically improving school bus transport to remove the need for "school runs." When I were a lad, we all either got the bus to school or walked. If your parents gave you a lift you were a poof, which in those days was a general term of abuse directed towards the pampered or effete as opposed to the homophobic bullying it would be viewed as today.

The second is by encouraging a major growth in working from home. This is, of course, supposed to be how we are all going to work in future, but as a matter of fact, a lot of companies don't encourage it, mainly due to worries about people's laptops being invaded by computer viruses which they then bring with them into the office. Maybe a few tax breaks here and there might force them to reconsider.

Will this send them all crazy?

Gordon Brown must surely by now be resigned to the fact that the good old, "Labour-supporting" Guardian clearly doesn't want him to succeed Blair.

But even against that backdrop, today's Guardian/ICM poll showing David Cameron 13 points ahead of him in a General Election will no doubt make extremely grim reading for the Chancellor, especially when coupled with the Blairites' ongoing attempts to propel David Miliband into the race.

When politicians fear that their seats are under threat, a sort of collective madness is apt to descend on them, as it did in the case of the Tory Party in 1990. Much more of this, and we could soon be seeing Labour MPs running round like headless chickens.

I shouldn't wonder that Brown might himself conclude that the long wait has gone on long enough, and make a further attempt to send Mr Tony on his way before things can get any worse....

Update: David Miliband has added a number of prominent bloggers to his blogroll. I suppose that given the content of recent posts I should not be too surprised that I am not among them.