You couldn't ask for a more vexing political conundrum than the Delaware Senate primary.  It's like something a poli-sci professor dreamed up to torture his students.  
It's a tough call... but many pundits seem unwilling to acknowledge that.  Some, like Michelle Malkin arguing for O'Donnell or Baseball Crank  laying out the case for Castle, are commendably willing to concede the difficulty of puzzling out the race, before offering their most carefully reasoned opinions.  Many others act as if the correct choice is obvious, and disagreement is either stupidity or treason.  People are drumming each other out of the conservative movement, pointing at formerly solid allies and doing the Invasion of the Body Snatchers howl.  Promotion to the "ruling class" has become so easy that I'm thinking of endorsing Castle just so I can join the aristocracy.  I'll settle for a barony.  I'm a cheap date.
The outcome of tomorrow night's primary is not the only reason so many swords are being drawn over Delaware.  There are deeper issues reflected in both of these elaborately damaged candidates.

money quote. empty your mouth:

Having said that, I disagree with Charles Krauthammer that Palin and Jim DeMint's endorsement of O'Donnell is "destructive" or "irresponsible."  They're big-picture idea people.