Question: What's the difference between these two opinion polls for this month's European elections?
Answer: Ok, the percentages in the bottom graph are slightly higher, but there is a striking similarity.
The top graph plots the front runners in the French European elections: Marine Le Pen's Front National, the centre-right opposition UMP, and Francois Hollande's governing Parti Socialiste.
Meanwhile, the bottom graph plots the latest European election poll results for UKIP, Labour and the Conservatives.
There is always a tendency to see the anti-EU/government/establishment phenomenon as unique to one's own country. These European elections are likely to prove otherwise.