Gallup.com:

In addition to the desirability of a troop withdrawal timetable, partisans have differing views on how successful the surge of U.S. troops in Iraq has been. Most Republicans, 70%, believe it is making the situation in Iraq better. In contrast, only 21% of Democrats say it is improving the situation, with nearly half (47%) saying it is not making much difference, and 31% saying the surge is making matters worse. Independents are about evenly divided in their views as to whether the surge is making the situation better (37%) or not making much difference (40%)…In general, the public tends to side with the Democrats from the standpoint of favoring a timetable, but relatively few advocate a quick withdrawal. And most seem sympathetic to the Republican argument about the United States needing to establish a certain level of security before leaving Iraq.