Texas The main article for this category is Opposition research. Pages in category "Opposition research" The following 13 pages are in this category, out of 13 total. This list may not reflect recent changes. Opposition researchA America Rising American Bridge 21st Century Arkansas ProjectB David BrockC Barbara ComstockD Definers Public AffairsF Fusion GPSM Media Matters for AmericaO Opposition Research GroupR Mike RomanS Glenn R. Simpson Steele dossier