Yes, the northern states did vote for Hitler, and the southern states voted for the Catholic party (or they were excommunicated for voting for Hitler).
But there were a lot of Lutheran pastors who died fighting against the Nazi's. My personal hero Bonhoeffer for example. There were also a lot of Catholics who liked Hitler, and many who worked with him. Some of our Orthodox friends here will attest to that. Heck, even Himmler was a daily mass Catholic until he decided that the Aryan race religion was more appealing. (See “Order of the Death's Head”, a good book on the history and formation of the SS.). The sad thing was that many Germans, Catholic, Lutheran, Reformed, even a few Jews (at first anyway) really like Hitler and worked with him. Many didn't see, or didn't want to see, what was going on.
Another fact is that by the time the Nazi's consolidated their rule, the state was putting a lot of pressure on all the Christian churches to go along, or else. The Catholics didn't fair that well either, and many of the priests and pastors went along to get along. If you read the records of the time, the State Church had basically stopped being Christian and became a semi pagan blood religion.
I am not sure why you are doing this. It seems that FR has become once again a place where confessional caucuses accuse each other of being the devil. If I wanted, I could find far worse statements of Catholic clergy about the Jews than what Luther wrote. But as it is Holy week, I will let this slide. For now.
And congratulations. Once, a few years ago, I had hoped that some sort of reconciliation between the Roman Catholic Church and some Lutheran Synods could be worked out. Now, to be honest, I don't think it will ever be. People here have convinced me of that. We have stopped looking at each other over rifle sights, but it seems that the more devout members would love to do that again.
I am not sure why you are doing this right now. It would be impolite to speculate.
I think arguments claiming Hitler comes from Luther also totally miss the forced Prussian Union between the Lutheran and Reformed churches. There’s no direct line between them without heterodoxy and the idiot modern belief ‘we all believe the same thing in the end’ creeping in, and especially doing so on behalf of the state.