The public craves fact-illuminating fiction
Contrary to those who argue that political thrillers have little appeal, the box office for this film (along with others made in 2005 like Munich, Good Night and Good Luck, and The Constant Gardener) attests to the fact that educated audiences do yearn for greater emotional and factual understanding of acute cultural and political tensions.
Looking ahead, I suspect that The Ides of March will be one of the more successful films of this kind in 2011.