Contrary to popular belief, Hitler didn't actually win an election.

Democracy didn't give rise to Nazism. It just gave them some attention.

So far as sanctions after the war.....sort of? The Soviet Union was vastly interested in extracting as much value from Eastern Germany as possible- machinery, ectectect, was all taken. German prisoners were put in slave-conditions on build projects and worked to death. All of Germany was occupied at this point and the country's infrastructure was so entirely battered that they couldn't even feed themselves without foreign assistance. With FDR dead- he was less than fond of Germany and was on the record when discussing post-war plans as saying that they could all starve to death for all he cared- and the realization that the western allies would very much want a rebuild West Germany ASAP, the idea that Germany need be punished was muted a bit. The "worst" of it was the social and media control of the country that was interested in breaking down the historic military tradition complex in Germany and de-Nazi-fying the place.

As far as the modern sense of a sanction where you block the sales of a good or all economic exchange, ect, not really. By the end of the war Germany was so entirely dependent on the invading forces that there wasn't really anything left to sanction in that sense.