Along with Nikolai Bukharin and Mikhail Tomsky, Rykov led the moderate wing of the Communist Party in the 1920s, promoting a partial restoration of the market economy under NEP policies. The moderates supported Joseph Stalin, Grigory Zinoviev, and Lev Kamenev against Leon Trotsky and the Left Opposition in 1923–24. After Trotsky's defeat and Stalin's break with Zinoviev and Kamenev in 1925, Rykov, Bukharin and Tomsky supported Stalin against the United Opposition of Trotsky, Zinoviev and Kamenev in 1926–27. After Kamenev voiced opposition to Stalin at the 14th Party Congress in December 1925, he lost his position as Chairman of the Soviet Council of Labor and Defense—which he had assumed from Lenin following Lenin's death—and was replaced by Rykov on 19 January 1926.