Both the Cristian Democtrats and the Social Democrats claimed the territory beyond the Oder-Neisse Line, according to these election posters, now a recognised border between Germany and Poland.
Ederic O (2009) Re: Thatcher (and Mitterand, and Bush I) Opposed German Reunification. [online] http://forum.dune2k.com/index.php?PHPSESSID=no2nb6begjchnpj2pv3nguiul0&topic=21995.msg346918#msg346918 [05/-3/2010]