Belgian poll: PS gains on Arizona reforms, far right leads in Flanders

A new Grand Barometer poll (Ipsos, Sept 8-15, 2026) shows the Belgian Socialist Party (PS) gaining support in Wallonia and Brussels, benefiting from the federal Arizona coalition's reforms, while the far right continues to dominate in Flanders. The poll indicates a divergence in regional political trends, with liberals stabilizing after recent declines. This matters as it signals potential shifts in coalition dynamics and policy support ahead of future elections.