Is the Divided Government Argument Effective?

I found this article by Shailagh Murray in the Sunday Washington Post curious. It argues the number of people who say they want the same party to control both ends of Pennsylvania Avenue has reached “new highs.” Murray writes:

The article suggests that one of McCain’s closing arguments–unified Democratic control is dangerous–receives minimal support from likely voters. But looking at the overall numbers masks the preferences of McCain’s real audience in the final week of the campaign–independents. No surprise, the bulk of support for unified control comes from self-identified Democrats. Republicans also prefer unified control. But as ABC News polling director Gary Langer points out independents (McCain’s real target group) lean toward divided government.