Sarah Palin is the un-Obama. That’s why she’s a political force, though she’s way beyond her 15 minutes of fame. That’s also why she’s a contender in 2012. Barack Obama is a prince of the meritocracy. Palin is queen of the north woods. Why does this matter? Because in presidential politics, opposites rule. If voters are unhappy with Obama, Republicans have to offer them the un-Obama. That’s a role Palin fits perfectly. Obama has degrees from Columbia University and Harvard Law School. Palin attended four colleges in six years before earning her bachelor’s degree from the University of Idaho. Obama...