| 2020 Butler County Primary August 4, 2020 OFFICIAL RESULTS | |||
| DEM UNITED STATES SENATOR Details | |||
| Barbara Bollier (DEM) | 2371 | ||
| Andover W3 | 77 | ||
| Logan Twp | 7 | ||
| Murdock Twp | 12 | ||
| Potwin-Plum Grove Twp | 23 | ||
| Prospect Twp | 67 | ||
| Rock Creek Twp | 12 | ||
| Rosalia Twp | 18 | ||
| RH City Pleasant Twp | 78 | ||
| Pleasant Twp | 83 | ||
| RH City Richland Twp | 61 | ||
| Richland Twp | 30 | ||
| Spring Twp | 64 | ||
| Towanda City-Twp | 84 | ||
| Walnut Twp | 27 | ||
| Whitewater-Milton 72 | 22 | ||
| Milton Twp 75 | 8 | ||
| Latham-Union Twp | 6 | ||
| Glencoe Twp | 11 | ||
| Elbing-Fairmount Twp | 13 | ||
| El Dorado W4 | 105 | ||
| Augusta Twp 16 | 36 | ||
| Augusta W1 | 62 | ||
| Augusta W2 | 53 | ||
| Augusta W3 | 137 | ||
| Augusta W4 | 73 | ||
| Benton City-Twp | 85 | ||
| Bloomington Twp | 25 | ||
| Bruno Twp N 77 | 38 | ||
| Bruno Twp N 99 | 19 | ||
| Bruno Twp S 77 | 10 | ||
| Lincoln Twp | 2 | ||
| Leon-Little Walnut Twp | 32 | ||
| Hickory Twp | 2 | ||
| Fairview Twp | 10 | ||
| El Dorado W3 | 129 | ||
| El Dorado W2 | 131 | ||
| El Dorado W1 | 157 | ||
| El Dorado Twp West | 25 | ||
| El Dorado Twp East | 15 | ||
| Douglass City-Twp | 68 | ||
| Clifford Twp | 3 | ||
| Clay Twp | 5 | ||
| Chelsea Twp | 12 | ||
| Cassoday-Sycamore Twp | 12 | ||
| Bruno Twp S 99 | 5 | ||
| Augusta Twp 14 | 19 | ||
| Andover W4 | 9 | ||
| Andover W2 | 179 | ||
| Andover W1 | 210 | ||
| Robert Leon Tillman (DEM) | 425 | ||
| Andover W1 | 32 | ||
| Andover W2 | 24 | ||
| Andover W3 | 7 | ||
| Andover W4 | 0 | ||
| Augusta Twp 14 | 1 | ||
| Augusta Twp 16 | 11 | ||
| Augusta W1 | 17 | ||
| Augusta W2 | 18 | ||
| Augusta W3 | 9 | ||
| Augusta W4 | 19 | ||
| Benton City-Twp | 10 | ||
| Bloomington Twp | 0 | ||
| Bruno Twp N 77 | 7 | ||
| Bruno Twp N 99 | 5 | ||
| Bruno Twp S 77 | 3 | ||
| Bruno Twp S 99 | 2 | ||
| Cassoday-Sycamore Twp | 6 | ||
| Chelsea Twp | 0 | ||
| Clay Twp | 2 | ||
| Clifford Twp | 5 | ||
| Douglass City-Twp | 22 | ||
| El Dorado Twp East | 1 | ||
| El Dorado Twp West | 1 | ||
| El Dorado W1 | 22 | ||
| El Dorado W2 | 42 | ||
| El Dorado W3 | 14 | ||
| El Dorado W4 | 22 | ||
| Elbing-Fairmount Twp | 0 | ||
| Fairview Twp | 5 | ||
| Glencoe Twp | 2 | ||
| Hickory Twp | 0 | ||
| Latham-Union Twp | 1 | ||
| Leon-Little Walnut Twp | 12 | ||
| Lincoln Twp | 2 | ||
| Logan Twp | 0 | ||
| Murdock Twp | 2 | ||
| Potwin-Plum Grove Twp | 5 | ||
| Prospect Twp | 8 | ||
| Rock Creek Twp | 3 | ||
| Rosalia Twp | 3 | ||
| RH City Pleasant Twp | 15 | ||
| Pleasant Twp | 19 | ||
| RH City Richland Twp | 5 | ||
| Richland Twp | 6 | ||
| Spring Twp | 13 | ||
| Towanda City-Twp | 12 | ||
| Walnut Twp | 5 | ||
| Whitewater-Milton 72 | 4 | ||
| Milton Twp 75 | 1 | ||