Benjamin Disraeli, a prominent British statesman and writer, was a member of the Conservative Party. However, it is important to note that Disraeli's political ideology and beliefs evolved throughout his career, and he is often associated with a distinct brand of conservatism known as "One-Nation Conservatism" or "Tory Democracy."

Disraeli served as Prime Minister of the United Kingdom in two separate terms, first from 1868 to 1869 and then from 1874 to 1880. During his time in office, he introduced a series of social and political reforms aimed at addressing the issues of social inequality and improving the conditions of the working class. Disraeli's policies included the extension of the vote to urban working-class men, the reform of factory laws, and measures to improve public health.

While Disraeli is primarily remembered as a Conservative politician, his advocacy for these social reforms and his recognition of the need to address social issues distinguish him from traditional conservatives of his time. His political philosophy emphasized the idea of a united society and the importance of social cohesion, which led to his One-Nation Conservatism approach.

Therefore, while Disraeli was a member of the Conservative Party, his ideology and policy positions often defied strict categorization as purely conservative or liberal.