Pouring over some old exit polls, I came across this, from 2000's CNN poll:
13% of the population characterized Bush as being "too liberal."
Of those people, 81% (or about 11% of the overall population) voted for Gore instead. In other words, 11% of the population thought Bush was too liberal and voted for Gore - 1 in about 9 voters.
About 1 in 256 people thought Bush was too liberal, but voted for Nader.
Thus, about 14% of Nader voters (around 1 in 7) thought Bush was "too liberal."
Sad, sad, sad.
None of that's insane compared to voting for Bush!