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It seems to me that Perot appealed to enough of the disaffected lower-middle class Southern Republican voters to clear the way for Clinton.
Bloomberg's constituency is a little different, IMHO - the disaffected cultural Republicans who aren't bible bashers.
Different rift, same political effect of splitting the Repub consituency.
But this is surmise, not based on much objective fact. Anyone have actual polling data, perhaps focus group results on Perot's voters?