JOHN Rentoul is, of course, right to warn Labour against choosing class as an electoral battlefield.

Inevitably, there are those who relish the idea, who don’t need much encouragement to embrace class politics as they would an old, beloved yet recently ignored comfort blanket.

These would-be class warriors cite recent polling evidence that attacks on bankers and student politics-type proposals for a High Pay Commission are popular with the electorate.

I have absolutely no doubt that that is, indeed, what electors are telling the pollsters. Just as they consistently told pollsters in the run-up to the 1992 general election that they would be prepared to pay higher taxes in exchange for better public service.

As Rentoul rightly says of the more recent public reaction to the tax on bankers’ bonuses:

The bonus tax is popular in the short term (on the “tax anybody but me” principle), but I think it will have a negative effect on perceptions of Labour over the long term because it makes the party look as if it doesn’t like success.

Rather than using opinion polls as a basis on which to judge the wisdom of class politics, let’s take a rather different measure: general election results. In 1979, 1983, 1987 and 1992, Labour promised tax increases (but only for the wealthy) and got hammered. In 1997, 2001 and 2005, we pledged not to increase the basic or higher rates of tax. And golly! Look what happened!

So, now that we have been running a consistent deficit in the polls for more than two years, what kind of logic dictates that we can win next time by reversing our previous election-winning strategy, by reverting to our old class-based ways?

No party that is seen to sneer at wealth, or which is suspected, because of its language, of treating the wealthy and the wealth creators as the enemy, can hope to win the confidence of the electorate.

Recent political history has established that as a fact. It’s perfectly understandable that, when economic times get tough and political times get tougher, that we should retreat into our traditional positions. There is certainty there, after all – the certainty that comes with drawing “dividing lines” on a map.

But comfortable though such a position may be, elections cannot be won from it.