Lauderdale at spring break--and notes that the vote for the Nixon inquiry was 410-4, not the 256-178 tally for the Clinton inquiry.
The tally for the Clinton inquiry was 200-200 and thus a null vote. 
mnli hypothesis: The tally for the Clinton inquiry was 200-200 and thus a null vote.  premise: Lauderdale at spring break--and notes that the vote for the Nixon inquiry was 410-4, not the 256-178 tally for the Clinton inquiry.