Merged at county level.
Census VTD definitions existed but overlapped MCDs to such an extent that no nontrivial MCD Group-ing was possible.
While Hawaii's Census data allows on for reasonable MCDgrouping, and while the voting data is usable, no precinct matches can be made for any year: the electoral data has only text names, while the Census data has only numeric names (in the full-text precinct name field). Furthermore, the electoral PR field (a numeric variable) does not follow any pattern that could serve as a recognizable basis for matching to the numeric values in the Census full-text precinct name field.
Therefore, Hawaii can only be aggregated at the MCDGRP=COUNTY level.
The exceptions file HI.MGE now contains a list of every county in the state, reflecting the condition above. However, other than running PLVDKEY with these (correct) exceptions, no other processing has been done on these data for now.
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