I’m waiting for the luncheon to begin, and while I have yet to spot the actors scheduled to be here, Shadow Sen. Michael Brown says former CBS Evening News anchor Dan Rather might be on his way here as well. Rather and Brown know each other through a mutual friend, and the veteran newsman is a proponent of D.C. voting rights, according to Brown. The shadow senator said he couldn’t be sure Rather would make it to the event, but that he had said he would come. Brown also said he and Rather have definite plans to sit together at Invesco Field tonight to watch Sen. Barack Obama accept the Democratic nomination for president — though whether they’ll actually sit in the D.C. delegation’s section wasn’t clear.