This is somewhat irrelevant:

97 years ago, on July 29th as today, Adolf Hitler became the leader of the Nationalsozialistische Deutsche Arbeiterpartei (German National Socialist Workers' Party). In an extraordinary assembly of NSDAP members, Hitler got 543 votes in favor and only one against.

You have the wrong idea on this. You have the simple and tighty groupthink party line:

Once he took absolute control of the party Hitler...

You think a.) he hypnotized 543 men? b.) absolute control? how does one even think that phrase makes sense? Do you think he had the powers of mesmerism? How did he broadcast it to 543 men. How did he broadcast it when he had millions of men? Why was there another faction in the party that tried to overthrow him and how could they if he had absolute control?