Merged at MCD Group level.
Has voting data for the odd years 1985, 1987, and 1989, as well as for the standard even years, 1984-1990.
Virginia has voting data files for *every* year from 1984, not just the even years. All operations were performed on the full set of 7 files.
MCDGRPs 072 and 073 have no voting data due to unavailable matches.
No precincts required an invalid match, i.e., for no electoral precinct was there more than one Census precinct (with differing MCDGRPs).
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