Do you have a source for this? Every analysis of exit polls I have seen (for example: http://www.fairvote.org/plurality/perot.htm) shows that Perot split the votes fairly evenly.
I also worded the original comment too strongly. Clearly, charisma is a big factor in modern elections, and one data point isn't enough to disprove anything in any case. Concluding that "it's charisma, stupid" does seem to rely on very small-number statistics, though.