Not completely up to date (and i hope you like different colors) , and other factor are involved, but there is a substantial correlation: http://peacebyjesus.witnesstoday.org/liberaltable2.html
Also this may be of interest: http://peacebyjesus.witnesstoday.org/Statistical_Correlations.html
FWIW, at least in America, I think the obama "decrees" may lead to a real change within the RCC in their political leanings. Theologically we will always be worlds apart, but if they shift and become solidly conservative it would be good for America.
I think it's interesting how the most conservative churches are the ones with the least centralized authority structure.