My guess is I'll find them in United Kingdom, Spain, and Greece, who either is run or was being ran by Social Democratic Labour parties.
PASOK (social democratic) won power in Greece last October. They aren't responsible of the crisis. The conservative New Democracy was in power from 2004 to 2009. I doubt than the country went bankrupt in 6 months. Greece was doomed, no matter the result of the 2009 election. New Democracy called elections in 2009, when they didn't have to call them before September 2011.
Why?
PASOK would be in power during the collapse, not them, so PASOK would have to do the austerity plan and be hated, not them.