Kammala jumla mai zuwa: Ehrnrooth dan siyasa ne na dama kuma mai adawa da gurguzu kuma mai sukar Shugaba Urho Kekkonen wanda ke da kyakkyawar dangantaka da Tarayyar Soviet. Ehrnrooth ya damu da goyon bayan Kekkonen ga
shari'o'in da ke da alhakin yaki a ƙarshen 1940s. Ya bar Jam'iyyar Jama'ar Sweden ba da daɗewa ba bayan jam'iyyar ta yi zaɓe don lissafin da ya tsawaita wa'adin shugabancin Kekkonen na shekaru huɗu ba tare da zaɓe ba. Sabuwar Jam'iyyarsa ta Dama ta Tsarin Mulki ba ta sami tallafi da yawa ba, ta sami kujera ɗaya kawai a zaɓen majalisar dokoki na 1975 da 1983 kuma babu kujeru kwata-kwata a zaɓen 1979, 1987 da 1991. Ehrnrooth ya koma Jam'iyyar Jama'ar Sweden a cikin 1990s.