Blumenthal studies public opinion around the Afghanistan war:

[T]he most likely impact of last night's speech will be downward pressure on Obama's overall job approval rating if only because of a phenomenon political scientists call "priming." All the stories on the Afghanistan speech will prime the importance of an issue that is an Obama weakness, so for the next few days, expect Obama's overall approval rating to fall slightly, even if the speech helps bump his Afghanistan approval numbers up a few points.

We want to hear what you think about this article. Submit a letter to the editor or write to letters@theatlantic.com.