There are a LOT of people who have been associated with Buchanan in the early years, and are currently much more pro-Israel than a typical N.Y. Jew.
Palin even proudly had an Israeli flag in her office. THis is extremely rare, and is something an average Jewish politican would NEVER do.
ALSO, a few years back, Buchanan was sadly, the defacto Conservative TV commentator. This was back before Fox News and talk radio were anything significant. SO MANY conservatives would support him, simply because there were so few other options (other than a few others on PBS)
I also USED to enjoy listening to Buchanan, and was pretty oblivious to his Jew hatred until recently. The same is true for Ron Paul. I was a BIG Paul supporter, until I became a member of the JTF, and someone showed the picture of him and Don Black... and I saw his quotes about Iran, and that was that.
BTW, it REALLY was talk radio that moved the conservatives significantly more towards righteousness. I cant stress this enough.