Gary Hart

And those cojones are carried by non other than Gary Hart :

It will come as a surprise to many people that there are rules in politics. Most of those rules are unwritten and are based on common understandings, acceptable practices, and the best interest of the political party a candidate seeks to lead. One of those rules is this: Do not provide ammunition to the opposition party that can be used to destroy your party's nominee. This is a hyper-truth where the presidential contest is concerned.

By saying that only she and John McCain are qualified to lead the country, particularly in times of crisis, Hillary Clinton has broken that rule, severely damaged the Democratic candidate who may well be the party's nominee, and, perhaps most ominously, revealed the unlimited lengths to which she will go to achieve power. She has essentially said that the Democratic party deserves to lose unless it nominates her.

As Andrew Sullivan deservedly says, "it's a start" but not enough because it would be too high a price to pay if McCain wins in November :

This is a generational struggle - although plenty of older folks get it completely. As such, it usually does take more than one insurrection to move past the past. Usually, we might wait for the forces of reaction and inertia and cynicism to fade away. The trouble is: we cannot afford more Rove-Morris politics given the enormous dangers we now face at home and abroad. And if you give the Clintons any power, we know they will use it to destroy - not just limit - any threat to them. They know the threat Obama and his politics present to them and their machine. They will never forgive his presumption. And you cannot assume they will at some point allow him to take over. The battle really is now.