Morning Briefing: A Day Without Attack Ads?

– In commemoration of 9/11, both the Obama and Romney campaigns say they will refrain from running any negative ads today.

– The Washington Post reports on a new Pew study of religious groups and party identification:

Religious Composition of Republicans/Republican Leaders

Religious Composition of Democrats/Democrat Leaders

– A birther gala with Sheriff Joe Arpaio and Pat Boone has been cancelled, due to complete lack of interest.

– A time-lapse video shows the One World Trade Center being built, from 2010 to present:

– And finally, outgoing Rep. Jason Altmire (D-PA) has been hanging out with rapper Flo Rida.