- Which president had the lowest approval rating? It may not be who you think USA Today
- Gallup Will No Longer Track Presidential Approval Ratings – The New York Times The New York Times
- Gallup ends its presidential tracking poll, the latest shift in the public opinion landscape CNN
- Whole Hog Politics: Gallup-ing away from history The Hill
- What Fabulous Timing for Gallup to Stop Tracking Presidential Approval! The Atlantic