Our goal is to match units of observation from the Census to the electoral database. We are matching at the lowest level of aggregation for which data for the same unit exists on both the Census and electoral sides. That turns out to be a unit of our creation -- what we call the MCD Group . The MCD Group combines 1 or more Census units called MCDs (which are minor civil divisions).
In order to perform this merging of databases at the MCD Group level, each database has to have MCD Group values filled in. This has already been done for the Census precincts, and for the electoral files' precincts in cases where a given county equals just one MCD Group .
Your mission is to assign MCD Group values to the remaining precincts without them. You do this by finding the Census precinct name that matches a given precinct name; you then take the Census precinct name's MCD Group and assign it to the precinct match.
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