Predictors of Euro2012 success
Out of a range of socio-economic and political predictors of a country's success in Euro 2012, the one that works best is the age of consent. The lower the age of consent, the better a country has done. It's clearly what's called a spurious correlation that does not reveal a real cause and effect pattern, but quite what it's masking is unclear.
Unsurprisingly, a country's population size and GDP are good predictors of success. Of the countries with a population of below 30 million, five are out and just three remain. Of the countries with a population above 30 million, five are in and just three are out.
Countries with a bicameral (two chamber) parliament do outperform those with single chamber parliaments so we need to be careful how we reform the House of Lords.