FRED HIATT: NOT THE MEDIAN DEMOCRATIC PRIMARY VOTER. In addition to being bad on the merits, what puzzles me about Tom Vilsack's decision to end his campaign yesterday by endorsing price indexing for Social Security is what makes him think it would work. I'll admit that I'm no political consultant; I don't have a strong idea of what would appeal to Middle America (TM) except to say that you probably want to analyze how I express ideas and do the precise opposite. But I do understand at least one thing: running to the right on an extremely popular entitlement program in a Democratic primary is remarkably stupid. Just ask Joe Lieberman.