| Similarity | Rank | |
|---|---|---|
| Gallup | 0.774 | 31251 |
| Zogby | 0.754 | 98864 |
| YouGov | 0.722 | 84388 |
| Barna | 0.713 | 91612 |
| Ipsos | 0.710 | 76730 |
| survey's | 0.699 | 87684 |
| Survey | 0.686 | 8173 |
| survey | 0.675 | 2189 |
| Poll | 0.671 | 23153 |
| poll | 0.666 | 6805 |
| Brookings | 0.664 | 43136 |
| comScore | 0.663 | 55106 |
| eMarketer | 0.658 | 73322 |
| Nielsen's | 0.655 | 94282 |
| Forrester | 0.654 | 31949 |
| Nielsen | 0.644 | 22948 |
| Annenberg | 0.642 | 68782 |
| Philanthropy | 0.641 | 37785 |
| nonpartisan | 0.640 | 43692 |
| Attitudes | 0.636 | 47056 |
| Research | 0.634 | 1739 |
| pollster | 0.633 | 73527 |
| Surveys | 0.633 | 25981 |
| Research's | 0.633 | 87025 |
| Trends | 0.630 | 17170 |