Obama quietly running negative ads...

... in key markets.

Obama campaign isn't interested in telling the media about every single McCain attack ad they’re running. Perhaps this is because Obama's brand can't afford to be tarnished too much if he's seen as constantly running negative TV ads. So the campaign simply puts them on the air in key markets, doesn't tell the press about them, and layers those ads with positive ones being run nationally during the Olympics.

- First Read @ MSNBC