Rossendale & Darwen.

Rossendale and Darwen is a seat of mill-town valleys rather than a single centre, stitched together from a network of small Pennine towns. Darwen, with some 28,000 people, is the largest, followed by Rawtenstall and Bacup, with Haslingden, Whitworth and a substantial rural and dispersed population beyond. No one town dominates; the constituency reads as a chain of distinct places, each with its own footprint. Two authorities run local services here: Rossendale, a district council holding seven of the seat's wards, and Blackburn with Darwen, a unitary authority covering the remaining five. A seat that straddles two councils of different types is a meaningful fact about how the area is governed.

The ward picture has shifted markedly between the two council areas. On the Rossendale side, the most recent contests in 2024 broadly favoured Labour, with the Conservatives and Greens taking the occasional seat. On the Blackburn with Darwen side, however, the 2025 and 2026 contests went heavily to Reform UK, which carried the Darwen wards and West Pennine on shares ranging from the low forties to the mid-fifties. At parliamentary level the seat changed hands in 2024, when Labour took it on 40.9 per cent against the Conservatives on 28.3, reversing a substantial Conservative win in 2019. The sitting member, Andy MacNae, elected in 2024, speaks most often on the economy, local government and health.

On the figures available, the seat looks less settled than its 2024 result alone would suggest, with recent ward voting pulling towards Reform on the Darwen side even as the Rossendale wards held for Labour. Recent local coverage has had a markedly administrative tenor -- municipal appointments, support schemes and the wider reorganisation of Lancashire's councils -- rather than any single dominant story. Among recorded offences, anti-social behaviour appears to run roughly 80 per cent above the constituency average, the one category that diverges clearly. Taken together, a seat won comfortably two years ago now sits among the more genuinely contested in the region.