| Similarity | Rank | |
|---|---|---|
| Gallup | 0.863 | 31251 |
| pollster | 0.808 | 73527 |
| poll | 0.794 | 6805 |
| pollsters | 0.774 | 63781 |
| Pew | 0.754 | 25766 |
| Politico | 0.739 | 50296 |
| survey's | 0.732 | 87684 |
| YouGov | 0.723 | 84388 |
| Romney | 0.722 | 7354 |
| Ipsos | 0.719 | 76730 |
| Polling | 0.719 | 60869 |
| Gingrich | 0.715 | 24044 |
| Rasmussen | 0.714 | 36781 |
| Poll | 0.713 | 23153 |
| Mitt | 0.712 | 14906 |
| Santorum | 0.705 | 29615 |
| Brookings | 0.698 | 43136 |
| polls | 0.697 | 9427 |
| Obama | 0.693 | 1729 |
| MSNBC | 0.692 | 28038 |
| McCain | 0.688 | 9925 |
| Romney's | 0.687 | 24301 |
| Huckabee | 0.687 | 44838 |
| CNN | 0.686 | 9995 |
| CPAC | 0.681 | 86635 |