Alexander Kerensky's first public speech took place in February 1905, and soon his name appeared in the police department's files. After the events of "Bloody Sunday," which deeply shook him, Kerensky tried to establish contacts with the Social Revolutionaries. In December of the same year, he was arrested for the first time and, after four months in custody, was sent to Tashkent under police supervision. Upon returning to Petersburg, he actively participated in political and criminal processes as a lawyer.

In his legal practice, Kerensky traveled all over Russia, speaking in cities such as Moscow, Petersburg, Irkutsk, Kazan, Warsaw, Tiflis, Saratov, and Riga. In May 1912, he, along with Senator Manukhin's commission, investigated the causes of the Lena massacre and supported the claims of the victims in court. That same year, he was elected to the Fourth State Duma from the labor group of the city of Volsk in the Saratov province. Using the Duma platform, he fought against the tsarist government and by the beginning of the February Revolution had become a recognized leader known to the broad masses.

On March 2, 1917, Kerensky entered the first composition of the Provisional Government as Minister of Justice and Attorney General, quickly becoming popular. The press called him the "Minister of Truth" and the "People's Tribune," while lawyer Karabchevsky referred to him as the "all-powerful revolutionary Attorney General." Kerensky worked tirelessly, sometimes losing consciousness from overexertion. He visited Moscow, Finland, Tsarskoye Selo, the front, and everywhere he was met with enthusiastic receptions.

Kerensky did significant work on reforming the judicial system, renewing the personnel of the Senate, courts, and prosecutor's office. He believed that "the new order should be based on law and justice." However, his approach sometimes led to excesses, as he thought that leadership positions should only be held by "public figures," predominantly from the legal profession. This negatively affected the functioning of the state apparatus.

As Attorney General, Kerensky paid great attention to investigating the activities of high-ranking tsarist officials. In the early days of the revolution, an Extraordinary Investigative Commission was established, and almost all former tsarist ministers ended up in the Peter and Paul Fortress. However, after the October Revolution, the commission's work was halted.

In May 1917, Kerensky became the Minister of War and Navy, and in July he headed the Provisional Government. After suppressing the Kornilov rebellion and proclaiming Russia a republic, he received virtually unlimited powers, leading the Directory and becoming the Supreme Commander. The last coalition government he formed on September 25, 1917, lasted a month. After the October Revolution, Kerensky attempted to organize a counter-revolution, but after failing, he emigrated.

Alexander Kerensky died on June 11, 1970. His first wife was Olga Lvovna Baranovskaya, and they had two sons, Oleg and Gleb.