Nathaniel Rothschild's letter to the Times about George Osborne's alleged attempt to solicit a donation from the Russian oligarch Oleg Deripaska – and a Conservative statement denying the claim.
A Times backgrounder about the Peter Mandelson-Osborne-Deripaska affair.
Benjamin Wegg-Prosser's blog, which includes his account of the Mandelson-Deripaska relationship and a swipe at the Daily Mail.
And Nick Robinson's take on the whole story.
Mike Smithson at PoliticalBetting.com analyses the Guardian's latest ICM poll.
Meanwhile, Martin Kettle says the poll is a "reality check" for Gordon Brown.
