Brit Hume just said Rob Portman will be there too, along with 2 others I can remember.
That’s not all, according to Time:
“Two other senators, Connecticut’s Joe Lieberman and South Carolina’s Lindsey Graham are also expected to show.”
http://www.time.com/time/politics/article/0,8599,1808816,00.html
Notice the campaign didn’t make a big deal announcing the Democrat and the Graham Cracker are part of it. I read somewhere that Tom Ridge supposedly will attend as well. Has all the makings of a reality TV show.