Peers last night voted to ban non-residents and so called "non-doms" from donating to political parties, in defiance of the Labour and Conservative frontbenches.
A backbench Labour amendment, designed to force the Tory donor Lord Ashcroft to clarify his tax affairs, was passed by 107 votes to 85, a majority of 22.
The amendment to the political parties and elections bill, tabled by the former Labour MP Lord Campbell-Savours, was based on an amendment which was blocked from debate in the Commons. The vote last night means that MPs will be given a chance to debate and vote on the issue.
No representation without taxation.