Lord Palmerston's constituency of support within the nineteenth-century Liberal party has received relatively little attention from historians. In many ways, however, his strong plebeian following provided the major popular current within Liberalism prior to the emergence of the cult of Gladstone in the mid-1860s. Even after Palmerston's death in 1865, his legacy continued to exercise a powerful influence, and William Ewart Gladstone, Viscount Hartington, Lord Rosebery, and others vied with one another for possession of his mantle and the role as his successor.
Historians have shown themselves baffled by this phenomenon of Palmerston's popular appeal. Conservative historians have sought to annex Palmerston for the Tory interest. Themes like “the nation,” the sanctity of British citizenship, and defense of British interests abroad they see as presaging the appeal of Benjamin Disraeli's “imperialism.” Most have combined in portraying Palmerston as a profoundly “illiberal” figure, more Tory than the Tories, whose views sat uneasily alongside such canons of Liberalism as free-trade noninterventionism and Gladstone's graduated program of parliamentary and civil-service reforms. His contribution to the midcentury Liberal consensus was, however, a major one, and must be seen as carrying equal weight with that of such figures as Richard Cobden, John Bright, and J. S. Mill.
Recent reappraisals of Liberalism have challenged the notion of a uniform, popular Liberalism in the 1850s and 1860s. In their research Patrick Joyce and James Vernon have emphasized the degree to which Liberalism at a popular level was a fusion of older and newer political forms, incorporating long-standing radical memories of the mass platform, traditional styles of leadership, and established methods of political communication.