In the latest Public Policy Poll (pdf) Michele Bachmann's momentum continues to build with her taking the lead for the first time in a national presidential poll. 21% of Republican primary voters favor Bachmann to Romney's 20%.
It's a paper thin margin for sure, but there is no way this is not devasting news to Romney and the Republican Party.
How much longer can rational people continue to identify themselves as Republicans?
David Brooks may have left the party this morning.