Eastleigh.

Eastleigh is a Hampshire seat built around a chain of large towns rather than a single centre. The town of Eastleigh itself holds close to half the population at roughly 45,100, with Chandler's Ford accounting for a further third and West End around a tenth; smaller settlements such as Horton Heath and a thinner rural fringe make up the remainder. Local services run across two district authorities: Eastleigh Borough Council, which covers nine of the seat's wards, and Test Valley Borough Council, which covers one. The character is suburban and commuter-belt, with a median age of forty-two and a population that is predominantly White on the most recent census.

That two-council geography sits beneath a markedly one-sided local picture. Across the twelve most-recent ward contests, the Liberal Democrats took eleven, the exception being Bishopstoke, which returned an Independent in May 2026; ward shares ranged from the low twenties in multi-seat divisions to near half in Hiltingbury. The parliamentary result is more finely balanced. The Liberal Democrats won the seat in 2024 on 34.4 per cent, with the Conservatives close behind on 31.1, a margin of barely three points and a sharp reversal of the comfortable Conservative win recorded here in 2019. The sitting member, Liz Jarvis, has held the seat since that 2024 contest.

On the figures available, Eastleigh reads as a seat the Liberal Democrats hold securely at council level but more narrowly at Westminster, where the Conservative vote remains within striking distance. Recent local reporting has had a flat, administrative tenor, dominated by routine borough business and the prospect of local-government reorganisation across Hampshire rather than by any single contested issue. The combination -- broad Liberal Democrat dominance in ward elections, a slim parliamentary margin, and a quiet press profile -- leaves the seat looking settled locally yet genuinely competitive in any future general election.