1966 United States Senate election in Kentucky County resultsCooper : 50-60% 60-70% 70-80% 80–90%Brown : 50–60% 60–70%
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.
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.