Obama's Speech Worked?

Weigel highlights a new poll:

In a November 18 Quinnipiac University survey, American voters said 48 - 41 percent that fighting in Afghanistan was the right thing to do. Since then Democrats have moved from 58 - 31 percent against the war to a 47 - 46 percent split. Republican support inched up from 68 - 22 percent to 71 - 21 percent and independent backing is up from 51 - 39 percent to 58 - 34 percent