Although many Labour Party candidates, including over 200 of the current Parliamentary Labour Party, are members of the Co-operative Party, only those candidates who have been officially endorsed by both parties may use the designation Labour Co-operative — around 30 candidates in the elections since 1997. Only Labour Co-operative MPs and peers belong to the parliamentary Co-operative Party group, such MPs and peers include Ed Balls and Lord Bilston.
At a local level, where wards may elect more than one councillor, only those where all candidates are supported by the Co-operative Party may use the designation on ballot papers and leaflets. In the list systems used for elections to the European Parliament, Scottish Parliament, Welsh Assembly and London Assembly, the designation has not been used. This convention has been adopted ostensibly to avoid confusion between a mix of candidates that could lead to a reduction in the Labour vote. Nevertheless, there have been Labour Co-operative candidates in the single-member constituencies in those bodies and the Co-operative Party continues to support and promote constituency and list members of those assemblies and the House of Lords.
Labour Co-operative candidates use the Labour logo on ballot papers, although a variety of hybrid logos have in the past been used on promotional literature.