Cameron's Conservative Enemies

I've blogged before about the problems that David Cameron will encounter from his own party's right wing should he enter power. Cameron the liberal moderniser is in a minority within his own party. Now the Guardian's Michael White has written about the problem of Cameron's right-wing enemies, having been to a reception held by Stuart Wheeler (former Tory financier) and addressed by Norman Tebbit. I'm just wondering if they'll hold off even as far as the election - with the Tory lead narrowing poll by poll, there may be a renewed pressure on Cameron to radicalise his policy offerings.