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Author/Creator
- United States. Social Security Administration. Office of Research, Evaluation, and Statistics110
- Forschungsgruppe Wahlen (Mannheim, Germany)39
- Pattan Development Organization21
- Craig, Fred W. S.18
- Congressional Quarterly, inc17
- Elections Canada16
- United States. Bureau of the Census16
- Nohlen, Dieter13
- Inter-university Consortium for Political and Social Research10
- Rallings, Colin9
- Thrasher, Michael9
- Oxford University Press8
- Scammon, Richard M.8
- United States. Federal Election Commission8
- Istituto centrale di statistica (Italy)7
- McGillivray, Alice V., 1934-7
- Sweden. Statistiska centralbyrån7
- United States. Bureau of the Census. Housing Division7
- United States. Bureau of the Census. Population Division7
- Australia. Parliament6