Obviously there was much less support after the camps were discovered, but I've heard that there was much admiration, support, and such amongst conservatives, liberals, and sometimes even socialists (I think!). The question here is, why? Most I know about it is the anti-semitism and rampant militarism, so there must be some inner message or actual propaganda successes that would actually get people to support them.
Like, what was it about fascism that drew in the crowd? What did they see in its future and utopia?
There's always always always more to say on topics like this, but I'd recommend reading up on this beautiful answer by /u/commiespaceinvader.