Merged at MCD Group level.
In 1990 there are CENSPREC sets of the form "Aname NUMBER" with each NUMBER in a different MCDGRP. The corresponding electoral precincts are fewer in number and of the form "Aname". The electoral precincts are matched to the lowest numbered CENSPREC. Probably this causes a surplus of electoral information to be sent to certain MCDGRPs at the expense of MCDGRPs with higher numbered CENSPREC labels. This only occurs in 1990 and the affected MCDGRPs are:
SURPLUS DEFICIT 13 14,15 19 15 16 17,18
They are all marked at questionable for that year.
Similarly for the 1986 dataset electoral precinct "Halliday-Collins" is matched to CENSPREC "Halliday" in MCDGRP 110, and not "Collins" which is in MCDGRP 107. Both these MCDGRPs are marked as questionable in this year, as 110 probably has too much electoral information associated with it at the expense of MCDGRP 107.
For the 1986 dataset the computer matched electoral precincts "10" and "10a" to two CENSPRECs "10" and "10" and nothing to "10-1". It could be interpreted that "10a" belongs to "10-1", however there is also a electoral precinct "9a" and no "9-1". Based on this the computer match is left as is, but the two MCDGRPs are marked as questionable. CENSPREC "10" is in MCDGRP 320 while CENSPREC "10-1", which is empty for this year, is in MCDGRP 321.
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