Gallup finds that 82 percent of Tea Party affiliated voters deem Newt Gingrich an acceptable Republican presidential nominee in 2012. They don't seem to realize that if he wins the nod their movement is doomed, regardless of how the general election goes. The Tea Party cannot support Gingrich without betraying its core principles. But the movement also cannot disclaim him once he is the Republican nominee. Tea Partiers with a better instinct for self-preservation would see that none of the Mitt Romney alternatives still running would be as corrosive to their cause as the former Speaker of the House. Why?...