Conviction politics fragments Britain

Voters in the 2026 local elections largely abandoned tactical voting and instead chose on emotional, narrative‑driven grounds, boosting niche or insurgent parties and eroding centre parties' share. Local interviews and modeled national vote shares suggest this behavioral shift is systemic rather than a one‑off protest, producing fragmentation that first‑past‑the‑post rules will translate into outsized seat swings. — If true, the move from tactical to conviction voting changes how parties campaign, how voters coordinate, and how electoral arithmetic translates votes into power — with immediate implications for governing stability and national elections.