It doesn't seem to me like the cartoon is intended to be funny. I think we're supposed to admire the cartoonist. "It's the statue, man, The Statue."
Le Pen is a quasi-Hilter statue that has been pulled down, Royal is that french trollop with the flag, and Sarkozy makes an ugly version of Thatcher.
Clearly, you are supposed to be barracking for Royal and congratulating yourself on not living in France. I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.
I dunno, seems kinda lame. I was hoping I was missing some deeper meaning or cultural reference, but apparently not.