Pennsylvania Democratic Presidential Primary
Polling Data
| Poll | Date | Sample | Clinton | Sanders | O'Malley | Webb | Chafee | Biden | Spread |
|---|
| Quinnipiac | 6/4 - 6/15 | 402 RV | 53 | 10 | 1 | 2 | 0 | 15 | Clinton +38 |
| PPP (D) | 5/21 - 5/24 | 385 LV | 63 | 14 | 6 | 3 | 3 | -- | Clinton +49 |
| Quinnipiac | 3/17 - 3/28 | 415 RV | 48 | 1 | 1 | 1 | -- | 13 | Clinton +33 |
| Quinnipiac | 1/22 - 2/1 | 392 RV | 54 | 2 | 2 | 1 | -- | 10 | Clinton +42 |
| PPP (D) | 1/15 - 1/18 | 494 RV | 58 | 5 | 1 | 1 | -- | 13 | Clinton +45 |
| PPP (D) | 5/30 - 6/1 | 382 RV | 65 | -- | 0 | -- | -- | 9 | Clinton +56 |
| Franklin & Marshall | 3/25 - 3/31 | 524 RV | 55 | -- | -- | -- | -- | 5 | Clinton +50 |
| Franklin & Marshall | 2/18 - 2/23 | 548 RV | 58 | -- | -- | -- | -- | 6 | Clinton +51 |
| PPP (D) | 11/22 - 11/25 | 436 RV | 61 | -- | 0 | -- | -- | 13 | Clinton +48 |