Peter Riddell wrote in his column in the Times on Saturday - http://www.timesonline.co.uk/tol/comment/columnists/peter_riddell/article6249870.ece
"Politicians generally, rather than any one party or MP, will be damaged by the disclosures on MPs’ expenses. They will discredit mainstream politics, reduce turnout and benefit anti-establishment groups. So watch how other parties, especially the British National Party, do in the European elections on June 4."