Reporters covering the campaign trail report that John McCain’s events are noticeably larger and louder than before the conventions. Why? Judging by voters in such states as New Mexico and Wisconsin shouting, “Sarah, Sarah, Sarah!” it seems his running mate, Sarah Palin, has excited supporters. In this ABC article, a reporter notes that a recent campaign stop in Missouri there were far more Palin signs being waved than McCain signs.

Democrat Barack Obama had narrowly led most national polls for some time, but now it seems Republican McCain enjoys a slight edge. One USA Today/Gallup poll reports that in the course of a week, Republicans’ enthusiasm jumped 18 percentage points, in part because of McCain’s choice of Palin as his running mate. Many conservatives admire Palin because she shares their views on social issues and Gallup said the Palin selection “certainly could be hypothesized to have added a little extra energy to standard convention bounce.” Yet, the poll says that “other indicators suggest that the selection of Palin was a polarizing move, generating significant positives and negatives.” One commonly mentioned criticism of Palin is that as a first-term governor of Alaska, she lacks the experience to be the second in command of the United States.

Is McCain’s newfound popularity entirely due to Palin? It’s hard to tell for certain, but probably not. Record numbers of Americans watched McCain’s speech, and it seems his message of putting his country ahead of party has resonated with some Independent voters, as another Gallup poll found that he is favored by 52 percent of Independents, compared to Obama’s 37 percent. McCain’s favorability among this group rose 12 percentage points since the Republican National Convention. The poll notes that while these gains might not last, “they enable McCain to launch the next phase of the campaign with the knowledge of what his winning coalition might look like.”

For more on both candidates’ latest efforts, see “With Conventions Concluded, U.S. General Election Begins.”