I thought Naders best state was Maine, with 1.45% of the vote. His best county was in Idaho, however.
Indeed, Arkansas was in fact Nader's
third best state after Maine (1.45%) and North Dakota (1.32%). His second and third best counties after that one in Idaho were both in Arkansas, though.
The PUMA element has some truth to it. Also, the Green Party is a lot stronger in Arkansas than most other states. (Yes, I know Nader was not the Green candidate in 2008, but his association with the party and overall stature were more significant that McKinney's.)