12 years ago, I would have supported Buchanan. 8 years ago, I could tolerate him. 4 years ago, he was distasteful to my sensibilities. Today, he is nuttier than a payday bar.
Most good conservatives were fans of Pat Buchanan back when he was powerful voice for limited and government and traditonal values. Most of us have also distanced ourselves from him as he gradually became the anti-semite isolationist that he is today.