Lord Levy's arrest
Hyperbole is never in short supply in the Westminster village, but the news of Lord Levy's arrest can fairly be described as a political bombshell.
Tony Blair's enemies have long thought - hoped even - that the police investigation into cash for honours was the one thing that could force the prime minister out of office long before he would want to leave it.
Why? Because Lord Levy is not merely Labour's fundraiser, he has been the PM's one man solution to Labour's over dependence on union funding. And, of course, he is a friend. Levy is being investigated - though it must be stressed he has not yet been charged - for a serious abuse of public office; the sale of honours and the concealing of donations to the Labour Party.
He does and will protest his innocence but already those more interested in ending the Blair era than in bringing Michael Levy low will sense that they may have the man, the story and the issue to do it.