Data mostly from here, and updated. Note that these are major paper flips. Swing state paper flips are more problematical, largely because what’s definable as a ‘swing state’ is shifting fairly drastically in the GOP’s definition right now…
There aren’t very many national papers that haven’t endorsed, and I suspect that the ones that haven’t yet, won’t. I find it… interesting… that the Atlanta Journal-Constitution and the New Orleans Times-Picayune are apparently going to sit this one out, after endorsing Obama in 2008; assuming, of course, that they don’t do their endorsements late. It’s also interesting that there hasn’t been much movement the other way…