Well, if the John McCain trip to D.C. was a gimmick, it didn’t pan out. The Gallup tracking poll, tied yesterday, shows a 3 point margin for Obama today. Gallup writes:

Today’s three-day rolling average includes interviewing from Tuesday through Thursday, and thus includes two days following McCain’s announcement on Wednesday afternoon that he was suspending his campaign, putting his participation in the first presidential debate on hold, and staying in Washington until lawmakers reach an agreement on a financial rescue bill. Last night’s interviewing could also reflect public reaction to the reported breakdown of those rescue talks late Thursday afternoon.

Obama’s current three percentage point advantage, while not significant, is a return to his slight frontrunner positioning of the past week, after slipping back to a tie with McCain at 46% in Thursday’s Gallup Poll Daily tracking report.