It's taken three trips to Kentucky, but I'm finally getting my Tea Party epiphany exactly where you'd expect: at a Sarah Palin rally. The red-hot mama of American exceptionalism has flown in to speak at something called the National Quartet Convention in Louisville, a gospel-music hoedown in a giant convention center filled with thousands of elderly white Southerners. Palin — who earlier this morning held a closed-door fundraiser for Rand Paul, the Tea Party champion running for the U.S. Senate — is railing against a GOP establishment that has just seen Tea Partiers oust entrenched Republican hacks in Delaware and...