Nothing will get Hillary out of the race

Even though she won by a 10-point margin and not the blow-out victory in Pennsylvania she was predicting a month ago; even though Barack Obama is decisively ahead in both the delegate count and the national popular vote in all Democratic primaries and caucuses this far; even though polls show Americans think Obama would handle a 2am crisis as well if not better than Hillary; even though other polls show Obama would fare as well if not better than Hillary against McCain; even though her campaign is $9m in the red and Obama has $42m in the bank; even though...

Multiply the 'even thoughs' by a factor of 50 and Hillary insists on staying in the game.

The only two substances that definitively get someone to quit running for president are gold or lead. In Mrs Clinton's case even their potency might fail. Gold, in this case the