Personally, I don't think so. It was mainly him blaming the communists and the entente for Germany's woes that did it. Well, that and the fact that there was no credible/effective opposition (except for Thallman and the Communists, which alienated Middle and Upper Class voters). The true "beauty" of Nazism (and I feel guilty for saying that...) was that it cloaked itself in revolutionary fervor, appealing to the Working classes; while promising to protect "traditional" German values, thereby appealing to the Upper and Middle Classes.
However, when he got into power, Hitler was now free to enact his inane racial theories. It certainly served as a way to unite Germany against a common foe and consolidate his power, but I too have wondered what would've happened had the Nazi's never pursued the holocaust. Perhaps a better question to ask would be "what if Hitler and the Nazis
were less anti-Semitic?" Still have the Nuremburg laws, etc., but Jews and "Untermensch" are tolerated in much the same way South Africa "tolerated" Blacks and Asians. Maybe have the following things happen:
1. Nuremburg laws passed; albeit without the intent of using them later to assist with Genocide.
2. Jews can be granted "Honorary Aryan" status if they denounce the "Jewish Conspiracy" and renounce their Jewish faith. From there, they can join the Wehrmacht, get jobs, etc. (But
only the
most "Aryan" of these "honorary Aryans" can join the Nazi party)
3. Jewish schools are closed, and Jewish children are sent to special "boarding schools" to be indoctrinated into Aryan culture. This is somewhat like what the Australian government did to Aboriginals and what the U.S. government tried to do with Indians.
4. Have it that the minimum amount of blood to be considered a Jew be around 1/3rd or 1/4th.
5. Allow for "Aryanized" Jews to marry other Aryans. Eventually, the Jewish race (And yes, I am aware that the concept of a Jewish "Race" is absolute B.S.

) will disappear, being that if you're less Jewish than 1/3rd or 1/4th, you're considered "Aryan." If they go with the idea that "Jewishness" is transferred through the father, maybe only Female Jews are allowed to marry Aryans (And only "Honorary Aryans"/Male "Germanized" Jews are allowed to marry Aryan women).
6. Make exceptions to these rules for Jews who are scientists, doctors, professionals, etc. (In other words: If you can help us win the war, we'll
tolerate you)
In other words, Nazi Germany behaves a bit more like Apartheid South Africa or other "Racist" states instead of going down the uber-racist, distopian-mass genocide route. They ain't nice, but they aren't bloodthirsty psychopaths either. (Of course, these laws might only apply to Jews in Western Europe and Germany proper, so that means they might still go crazy in the east.

On the flip-side, however, there's also a possibility that they'll allow for "Aryanizable" Jews in the east to survive, provided they assimilate.)