1918–1950: The County Borough of Portsmouth wards of Charles Dickens, Mile End, North End, and Portsea.
1974–1983: The County Borough of Portsmouth wards of Cosham, Farlington, Meredith, Nelson, North End, Paulsgrove, Portsea, and St Mary and Guildhall.
1983–1997: The City of Portsmouth wards of Copnor, Cosham, Drayton and Farlington, Hilsea, Nelson, and Paulsgrove, and the Borough of Havant wards of Purbrook and Stakes.
1997–2010: The City of Portsmouth wards of Copnor, Cosham, Drayton and Farlington, Hilsea, Nelson, and Paulsgrove.
2010–present: The City of Portsmouth wards of Baffins, Copnor, Cosham, Drayton and Farlington, Hilsea, Nelson, and Paulsgrove.
This urban seat is of average affluence[3] and incomes, with relatively low unemployment compared to the national average measured at the end of 2012 at 3.8% (claimant count) as opposed to 2.3% average across the region.[4]
Compared to Portsmouth South, it has a lower proportion of public sector workers, students and ethnic minorities. This explains the divergence between the two Portsmouth seats in voting patterns. The seat is currently in Labour hands, but very narrowly, with the former Conservative MP and leadership candidate Penny Mordaunt commanding a large personal following.
The seat has been one of the most long-standing bellwethers (of the national election winner), having that status since its creation in February 1974; only the Dartford constituency have a longer-standing status, which has been a bellwether since 1964.
^A borough constituency (for the purposes of election expenses and type of returning officer)
^As with all constituencies, the constituency elects one Member of Parliament (MP) by the first past the post system of election at least every five years.
^Debrett's House of Commons and the Judicial Bench, 1922
Sources
Craig, F. W. S. (1983) [1969]. British parliamentary election results 1918–1949 (3rd ed.). Chichester: Parliamentary Research Services. ISBN0-900178-06-X.