In March 1918, Drexler founded a branch of the Free Workers' Committee for a Good Peace (Der Freie Arbeiterausschuss für einen guten Frieden) league.

[2] Karl Harrer, a journalist and member of the Thule Society, convinced Drexler and several others to form the Political Workers' Circle (Politischer Arbeiter-Zirkel) in 1918.

[2] At a DAP meeting in Munich on 12 September 1919, the main speaker was Gottfried Feder, who held a lecture on the subject of 'the breaking of interest slavery'.

[6] In vehemently attacking the man's arguments, Hitler made an impression on the other party members with his oratorical abilities, and according to him, the professor left the hall defeated.

It was in this speech that Hitler, for the first time, enunciated the twenty-five points of the German Worker's Party's manifesto that he had authored with Drexler and Feder.

[8] Through these points, he gave the organisation a foreign policy, including the abrogation of the Treaty of Versailles, a Greater Germany, Eastern expansion, and exclusion of Jews from citizenship.

His membership in the Nazi Party ended when it was temporarily outlawed in 1923 following the Beer Hall Putsch, although Drexler had not taken part in the coup attempt.