In numbers

Historical statistics from 1780 to 1974
http://wales.gov.uk/topics/statistics/publications/dwhs1700-1974/?lang=en

General election results in Wales

Download the election results as an Excel file.

Turnouts at elections in Wales (Parliamentary general elections and National Assembly for Wales)

Poll evidence on constitutional preferences in Wales

1997 1999 2001 2003 2006 2007 2008 2009
Independence 13 10 12 13 11 12 10 8
Parliament 18 28 37 36 40 42 39 35
Assembly 25 33 25 25 24 26 31 37
No Devolution 37 24 23 20 20 16 15 14
DK/Refused 7 5 4 5 5 5 6 6