This is not, strictly-speaking, a problem that will be solved at the voting booth.
This is a sock full of ball-bearings problem, and requires a sock full of ball bearings solution.
The way you handle Nazis, the way you protect your friends and family, is by beating on Nazis until all the Nazi leaks out. Historically-speaking, it is the only effective solution. It is risky in many ways, physically and legally, but not as risky as tolerating actual evil. I mean, if you don't and nothing happens to you or your loved ones, you still have to live with the idea that you did nothing.
And at that point, you may as well go to the cemetery and shit on your grandparent's graves.