I LISTENED to Vince Cable on the PM programme tonight. Oh, how the mighty are fallen! From the nation’s “favourite” and most trusted politician to a dissembler of the first order.

Since it was radio, I couldn’t tell if he was wearing a straight face when he tried to suggest that VAT is not a regressive tax. But if it’s not a regressive tax, why did his party (the party of “fairness”, remember) oppose raising it a few weeks ago?

And they didn’t just oppose it – they launched a major campaign warning us that if the bad, evil Tories got in, it would cost us dear in higher VAT bills.

Cable claimed today that he changed his mind when he saw the true state of the economy from behind his shiny new Whitehall desk. This, of course, is a lie. He is saying that to try to justify trading his principles for a job. He opposed immediate cuts… until he became a minister. He opposed a rise in VAT… until he became a minister. He thought George Osborne was out of his depth…  until he became a minister.

This isn’t just a consequence of coalition politics, the inevitable result of having to compromise with your political partners. If Cable had an ounce of dignity or principle left he would at least admit that some of what is in the Budget was not to his taste. He would stand by what he said in the campaign and what was written in his manifesto.

And what did the LibDems get today in return for agreeing to turn their backs on their own policies and principles? Ah, yes – a modest rise in the income tax threshold. Gosh, I bet that really went down badly among Tory back benchers who now have to go back to their constituencies and explain that one to their voters and local activists. Yeah, that must really have grated with Cameron and Osborne…

Let me be clear: when Cable and the rest of them claim that they changed their mind over policy only when they saw the true state of the books, and when a civil servant pointed out Greece to them on a map, they’re lying. They know that we know they’re lying, and they know no-one believes them.

Cable’s old boss and friend, the late John Smith, would be ashamed of him today.

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