The 1966 United States Senate election in Kentucky took place on November 8, 1966. Incumbent Republican Senator John Sherman Cooper was elected to a second consecutive term in office,[ a] defeating Democrat John Y. Brown Sr. in a rematch of the 1946 special election . This would be the first statewide election in Kentucky in which a Republican won Elliott County, and the only until 2016 when Donald Trump won the county for president.
1966 United States Senate election in Kentucky
County resultsCooper : 50-60% 60-70% 70-80% 80–90%Brown : 50–60% 60–70%
John Y. Brown Sr. , former U.S. Representative at-large and nominee for Senate in 1946
Jesse N.R. Cecil
James Ward Lentz
Gaines P. Wilson
County
John Sherman Cooper Republican
John Young Brown Sr. Democratic
Margin
Total votes cast[ 4]
#
%
#
%
#
%
Adair
3,003
70.21%
1,274
29.79%
1,729
40.43%
4,277
Allen
2,094
70.51%
876
29.49%
1,218
41.01%
2,970
Anderson
1,799
60.27%
1,186
39.73%
613
20.54%
2,985
Ballard
1,347
54.73%
1,114
45.27%
233
9.47%
2,461
Barren
4,194
61.24%
2,655
38.76%
1,539
22.47%
6,849
Bath
1,591
55.92%
1,254
44.08%
337
11.85%
2,845
Bell
4,240
61.28%
2,679
38.72%
1,561
22.56%
6,919
Boone
3,692
63.57%
2,116
36.43%
1,576
27.13%
5,808
Bourbon
2,051
60.01%
1,367
39.99%
684
20.01%
3,418
Boyd
8,462
62.95%
4,980
37.05%
3,482
25.90%
13,442
Boyle
3,368
67.16%
1,647
32.84%
1,721
34.32%
5,015
Bracken
1,190
64.46%
656
35.54%
534
28.93%
1,846
Breathitt
1,195
34.43%
2,276
65.57%
-1,081
-31.14%
3,471
Breckinridge
2,847
60.65%
1,847
39.35%
1,000
21.30%
4,694
Bullitt
2,399
56.98%
1,811
43.02%
588
13.97%
4,210
Butler
2,513
81.70%
563
18.30%
1,950
63.39%
3,076
Caldwell
2,752
69.85%
1,188
30.15%
1,564
39.70%
3,940
Calloway
3,244
63.68%
1,850
36.32%
1,394
27.37%
5,094
Campbell
12,128
64.02%
6,817
35.98%
5,311
28.03%
18,945
Carlisle
1,417
61.08%
903
38.92%
514
22.16%
2,320
Carroll
940
47.36%
1,045
52.64%
-105
-5.29%
1,985
Carter
3,234
66.65%
1,618
33.35%
1,616
33.31%
4,852
Casey
3,299
80.48%
800
19.52%
2,499
60.97%
4,099
Christian
4,394
58.96%
3,058
41.04%
1,336
17.93%
7,452
Clark
2,850
62.97%
1,676
37.03%
1,174
25.94%
4,526
Clay
2,802
76.68%
852
23.32%
1,950
53.37%
3,654
Clinton
2,150
84.41%
397
15.59%
1,753
68.83%
2,547
Crittenden
1,825
70.30%
771
29.70%
1,054
40.60%
2,596
Cumberland
1,698
80.13%
421
19.87%
1,277
60.26%
2,119
Daviess
10,152
59.62%
6,877
40.38%
3,275
19.23%
17,029
Edmonson
1,878
75.48%
610
24.52%
1,268
50.96%
2,488
Elliott
846
53.85%
725
46.15%
121
7.70%
1,571
Estill
2,201
67.66%
1,052
32.34%
1,149
35.32%
3,253
Fayette
22,374
66.27%
11,390
33.73%
10,984
32.53%
33,764
Fleming
1,892
63.81%
1,073
36.19%
819
27.62%
2,965
Floyd
4,890
55.98%
3,846
44.02%
1,044
11.95%
8,736
Franklin
5,002
47.91%
5,439
52.09%
-437
-4.19%
10,441
Fulton
1,406
65.49%
741
34.51%
665
30.97%
2,147
Gallatin
529
51.01%
508
48.99%
21
2.03%
1,037
Garrard
2,210
67.92%
1,044
32.08%
1,166
35.83%
3,254
Grant
1,476
61.89%
909
38.11%
567
23.77%
2,385
Graves
5,231
61.82%
3,230
38.18%
2,001
23.65%
8,461
Grayson
3,642
72.94%
1,351
27.06%
2,291
45.88%
4,993
Green
2,099
67.06%
1,031
32.94%
1,068
34.12%
3,130
Greenup
4,676
61.02%
2,987
38.98%
1,689
22.04%
7,663
Hancock
980
64.64%
536
35.36%
444
29.29%
1,516
Hardin
5,876
64.69%
3,207
35.31%
2,669
29.38%
9,083
Harlan
6,056
69.26%
2,688
30.74%
3,368
38.52%
8,744
Harrison
1,905
55.56%
1,524
44.44%
381
11.11%
3,429
Hart
2,730
65.93%
1,411
34.07%
1,319
31.85%
4,141
Henderson
3,523
54.85%
2,900
45.15%
623
9.70%
6,423
Henry
1,625
52.30%
1,482
47.70%
143
4.60%
3,107
Hickman
1,298
69.30%
575
30.70%
723
38.60%
1,873
Hopkins
4,534
56.85%
3,442
43.15%
1,092
13.69%
7,976
Jackson
2,549
87.53%
363
12.47%
2,186
75.07%
2,912
Jefferson
113,648
66.48%
57,312
33.52%
56,336
32.95%
170,960
Jessamine
2,379
68.76%
1,081
31.24%
1,298
37.51%
3,460
Johnson
3,623
73.80%
1,286
26.20%
2,337
47.61%
4,909
Kenton
16,115
67.84%
7,638
32.16%
8,477
35.69%
23,753
Knott
1,474
43.49%
1,915
56.51%
-441
-13.01%
3,389
Knox
3,884
74.35%
1,340
25.65%
2,544
48.70%
5,224
Larue
2,052
69.16%
915
30.84%
1,137
38.32%
2,967
Laurel
4,988
78.54%
1,363
21.46%
3,625
57.08%
6,351
Lawrence
1,961
61.94%
1,205
38.06%
756
23.88%
3,166
Lee
1,449
68.71%
660
31.29%
789
37.41%
2,109
Leslie
2,049
82.39%
438
17.61%
1,611
64.78%
2,487
Letcher
3,528
65.88%
1,827
34.12%
1,701
31.76%
5,355
Lewis
2,327
75.65%
749
24.35%
1,578
51.30%
3,076
Lincoln
2,916
66.00%
1,502
34.00%
1,414
32.01%
4,418
Livingston
1,483
64.06%
832
35.94%
651
28.12%
2,315
Logan
2,638
46.54%
3,030
53.46%
-392
-6.92%
5,668
Lyon
977
62.91%
576
37.09%
401
25.82%
1,553
Madison
5,329
61.77%
3,298
38.23%
2,031
23.54%
8,627
Magoffin
1,605
59.69%
1,084
40.31%
521
19.38%
2,689
Marion
1,927
55.82%
1,525
44.18%
402
11.65%
3,452
Marshall
3,465
64.75%
1,886
35.25%
1,579
29.51%
5,351
Martin
1,446
76.11%
454
23.89%
992
52.21%
1,900
Mason
2,812
66.23%
1,434
33.77%
1,378
32.45%
4,246
McCracken
9,039
66.21%
4,612
33.79%
4,427
32.43%
13,651
McCreary
2,460
86.86%
372
13.14%
2,088
73.73%
2,832
McLean
1,478
55.61%
1,180
44.39%
298
11.21%
2,658
Meade
1,823
57.85%
1,328
42.15%
495
15.71%
3,151
Menifee
710
57.68%
521
42.32%
189
15.35%
1,231
Mercer
2,695
60.93%
1,728
39.07%
967
21.86%
4,423
Metcalfe
1,636
62.92%
964
37.08%
672
25.85%
2,600
Monroe
3,171
80.73%
757
19.27%
2,414
61.46%
3,928
Montgomery
2,053
65.72%
1,071
34.28%
982
31.43%
3,124
Morgan
1,254
50.38%
1,235
49.62%
19
0.76%
2,489
Muhlenberg
4,016
56.19%
3,131
43.81%
885
12.38%
7,147
Nelson
3,280
61.93%
2,016
38.07%
1,264
23.87%
5,296
Nicholas
886
61.49%
555
38.51%
331
22.97%
1,441
Ohio
3,279
68.10%
1,536
31.90%
1,743
36.20%
4,815
Oldham
1,727
60.68%
1,119
39.32%
608
21.36%
2,846
Owen
1,042
44.10%
1,321
55.90%
-279
-11.81%
2,363
Owsley
980
81.46%
223
18.54%
757
62.93%
1,203
Pendleton
1,548
58.28%
1,108
41.72%
440
16.57%
2,656
Perry
4,303
65.31%
2,286
34.69%
2,017
30.61%
6,589
Pike
8,495
52.96%
7,544
47.04%
951
5.93%
16,039
Powell
1,277
61.04%
815
38.96%
462
22.08%
2,092
Pulaski
8,364
80.91%
1,973
19.09%
6,391
61.83%
10,337
Robertson
394
65.89%
204
34.11%
190
31.77%
598
Rockcastle
2,841
75.80%
907
24.20%
1,934
51.60%
3,748
Rowan
2,054
64.41%
1,135
35.59%
919
28.82%
3,189
Russell
2,592
79.98%
649
20.02%
1,943
59.95%
3,241
Scott
1,932
55.84%
1,528
44.16%
404
11.68%
3,460
Shelby
2,504
56.63%
1,918
43.37%
586
13.25%
4,422
Simpson
1,419
61.64%
883
38.36%
536
23.28%
2,302
Spencer
849
60.08%
564
39.92%
285
20.17%
1,413
Taylor
2,563
69.74%
1,112
30.26%
1,451
39.48%
3,675
Todd
1,514
60.01%
1,009
39.99%
505
20.02%
2,523
Trigg
1,412
57.21%
1,056
42.79%
356
14.42%
2,468
Trimble
683
43.75%
878
56.25%
-195
-12.49%
1,561
Union
1,788
51.86%
1,660
48.14%
128
3.71%
3,448
Warren
6,570
62.99%
3,861
37.01%
2,709
25.97%
10,431
Washington
1,930
63.34%
1,117
36.66%
813
26.68%
3,047
Wayne
2,642
66.13%
1,353
33.87%
1,289
32.27%
3,995
Webster
1,801
53.46%
1,568
46.54%
233
6.92%
3,369
Whitley
5,023
77.68%
1,443
22.32%
3,580
55.37%
6,466
Wolfe
1,100
65.13%
589
34.87%
511
30.25%
1,689
Woodford
2,305
64.62%
1,262
35.38%
1,043
29.24%
3,567
Totals
483,805
64.52%
266,079
35.48%
217,726
29.03%
749,884
^ a b Cooper had served three partial non-consecutive terms from 1946–1949, 1952–1955, and 1957–1961 and one full term beginning in 1961.