Don’t worry, liberal media bias is still just a right-wing myth. The Tom and Jerry Problem — Bill Keller/NYTIf the 2012 election were held in the newsrooms of America and pitted Sarah Palin against Barack Obama, I doubt Palin would get 10 percent of the vote. However tempting the newsworthy havoc of a Palin presidency, I’m pretty sure most journalists would recoil in horror from the idea. That is not — or not entirely — for the reasons Palin thinks: that journalists are liberal elitists, that they find the Tea Party fringe ridiculous or alarming or that they are infatuated...