This is corrupt behaviour and - more to the point - is by no means out of the ordinary in British politics.
And no, it's obviously not just the Tories. It's a serious problem that in many ways goes to the heart of why Britain is badly governed and has been for some time. It's not at all distant from the problems exposed by cash-for-peerages and cash-for-answers, or the now-extensive lobbying operations that riddle Westminster. Voters need to pay more attention to it, but they won't.