Constituency polls, 1987-2003, comprising tabulated results of opinion polls, prepared by NOP and Beaufort Research Limited, carried out in various constituencies across Wales to assess voting intentions and behaviour, and to examine public opinion on local issues.

Pre-election opinion polls, 1979-2004, comprising copies of the questionnaires used and tabulated results. The polls were carried out across Wales by NOP and Beaufort Research Limited, amongst others, to survey voting intentions and behaviour amongst representative samples of the Welsh electorate in various general elections, Welsh Assembly elections and the 2004 European Election. Issues such as devolution are also examined. The series also includes a report on British voting trends between 1979 and 1987.