Political Sex Scandals: David Wu Resignation Far From The First, Won't Be The Last (PHOTOS)

Yet another politician fell victim to a sex scandal Tuesday, as Rep. David Wu (D-Ore.) announced that he would be resigning in the wake of an allegation that he had engaged in an unwanted sexual encounter with an 18-year-old.

While sex and American politics have mixed, often controversially, pretty much since the beginning of time, it's hard not to notice that the last few years have seen an unusually high number of public scandals: 14 high-profile cases have come to light over the past five years, with 7 ending in resignations.

What's the reason for this spate of sex scandals? A new class of hypersexual or careless politicos? A media aided by new investigatory tools and driven by a tabloid-obsessed public? Something else?

Below is a list of the most notorious political sex scandals over the last decade. Which is the most shocking?