On February 27, 1925, Hitler resurrected the NSDAP (Nazi party) in Munich. From the article:
"Adolf Hitler Becomes Leader of the Reestablished Nazi Party
FEBRUARY 27, 1925
Hitler declares the reformulation of the Nazi Party (NSDAP) with himself as leader (Führer). He makes the declaration at the Bürgerbräukeller in Munich, the beer hall where he led his aborted coup against the democratically elected government in 1923.
Recently released from Landsberg prison, where he served just 9 months for treason, Hitler quickly reestablished the Nazi Party, not as a revolutionary party to seize power by force in Germany, but as a political party campaigning to win votes in democratic elections. Hitler vowed to win elections, to gain power through majority vote, and then reform the German government, that is—to establish a Nazi dictatorship in Germany. Henceforth, Hitler used his authority over the party to bypass or override all ideological conflicts in his single-minded pursuit of power in Germany."