The big difference is that Hitler never won an election in his life. Heck, I don't think he ever even ran for political office, if my memory serves me well. It was Gernam President Von Hindenberg who appointed Hitler as Chancellor of Germany, after the old man was subjugated to an all-night harrange by his pro-Nazi nephew. (or son, can't recall for certain.)
His party got the most votes in the 1932 election for members of the Reichstag.
Hindenburg appointed Hitler Chancellor for that reason.
Then came the Reichstag fire and Hitler blamed Communists so he could put their party out of business. They competed for his voters.
A less free parliamentary election in 1933 that followed the fire increased the Nazi share of the Reichstag, then Hitler allied with Nationalists and had a majority in the parliament.
Step by step freedoms were eliminated and the various German state governments were legislated out of their powers by parliamentary votes in Berlin.
Chavez has been following a similar pattern in recent years by taking power away from mayors and governors.
Hitler ran for President of Germany in 1932, losing to von Hindenburg.