In elections at conventions at which nominations are also made, delegates who have been elected by secret ballot must be given ample opportunity to nominate candidates on behalf of themselves or the members they represent. A union may adopt a rule limiting access to the convention floor to delegates. However, once the candidates have been nominated, they must be accorded equal opportunity to campaign.[36] Where delegates are instructed by locals to nominate candidates, the constitution of the organization or the convention rules should provide a specific procedure for the implementation of nominating instructions issued by any local to its delegate.