Brazil 2026 runoff polls begin: Datafolha, AtlasIntel, Ipespe release this week

Brazilian polling firms Datafolha, AtlasIntel, and Ipespe are set to release first second-round voting intention surveys for the 2026 elections starting Thursday. The data will provide early indicators of the runoff dynamics, though early polls often have high volatility. This matters as it sets the initial narrative for the final campaign stretch.