This is partially related to the issue that dislike of certain groups of individuals had long roots in Europe (such as exemplified by this article).
Anyway, I was looking at this other question which asks how Hitler could possibly have had his own militia already in 1923.
That other question has this quotation about the Munich Post newspaper (from this article):
As Hitler sought to ingratiate himself with the city’s rulers (though never giving up the threat of violence), the Post reporters dug into his shadowy background, mocking him mercilessly, exposing internal party splits, revealing the existence of a death squad (“cell G”) that murdered political opponents and was at least as responsible for Hitler’s success as his vaunted oratory.
Based on above it looks like Hitler's "party" had his own "death squad" well before 1933, and at least the Munich Post newspaper was writing about it.
What I wanted to ask is about though are the anti-Jewish sentiments of Hitler. To what degree would his anti-Jewish sentiments have reasonably been known to those who voted him to power in 1933?