Sustained negative approval signals coalition stress

When a leader’s net approval stays below a meaningful negative threshold for multiple consecutive weeks (here seven weeks at ≤ -15), it is more than normal volatility: it indicates cross‑cutting erosion in core governing coalitions and creates durable openings for opposition messaging and intra‑party pressure. Tracking 'streak length' above simple weekly snapshots provides an early warning metric for impending legislative vulnerability, fundraising shortfalls, and shifts in elite support. — A simple, quantitative 'streak metric' helps campaign strategists, congressional actors, and reporters anticipate when a president’s standing is entering a phase that materially changes bargaining power and electoral risk.