ABCDE
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Maintained by The Downballot@downballotnews
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Open SeatsUncontested Seats
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Year(D)(R)No (R) on ballotNo (D) on ballot
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202610
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202428261720
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202237241223
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20201336198
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20182241383
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201619273529
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201419284136
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201226242025
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20102023524
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20086294214
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200612214610
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20042936
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20023745
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20003332
18
19983956
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1996913
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19941736
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19921914
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19904835
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19886119
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19865722
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19845314
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19824210
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19803414
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19784218
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1976397
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1974551
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1972438
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1970545
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1968397
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1966524
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1964411
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1962561
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1960733
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1958881
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1956603
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1954752
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1952723
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Uncontested seats include seats where one party has its candidate(s) eliminated prior to
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November in all-party primaries.
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Source: Uncontested seats