Historical clue formulations

• Research for a political hit, slangily — 2026-06-17
• Research on a political rival, for short — 2025-04-13
• Research on a rival, in D.C.-speak — 2024-09-17
• ___ research, source of "dirt" on a political rival — 2023-09-10
• Dirt-digging research, for short — 2023-09-06
• ___ research (info on a political adversary) — 2023-02-23