Like I said: being a Nazi is not a deal-breaker for these people. They'll vote for a self-described Nazi as long as he's the Republican candidate.
He did win the primary; he won unopposed.
But let's also talk about white supremacist Steve King: not only did he win his contested primary, he got 157,221 votes and won his congressional seat.
Let's also talk about Steve Scalise and Ron DeSantis. Let's also talk about all of the many Republican racists, white supremacists, alt-righters, neo-Nazis, and Holocaust deniers who may not have won but got support from significant numbers of Republican voters.
https://www.vox.com/policy-and-poli...supremacist-candidates-2018-midterm-elections
This election confirmed that, all over the United States, a huge number of Republican voters have no issue with - or outright support - overt racism.
For starters, if their values are so in line with those of Nazis and white supremacists that these people would follow them, I'd say that Republicans ought to stop and reflect on whether their values are ones worth having.
But seriously, i don't think that there's really much of a conflict between the values of mainstream Republicans and the overt racists. Racism and xenophobia pervades the Republican platform; it's part of the party's appeal. It's not surprising at all to me that some Republican candidates are open about it.