While some issues like The War in Iraq and global warming are not completely partisan and have both Republicans and Democrats on either side of the debate, there are other issues that are cut straight down the middle, much like our country. One such issue is gay marriage.
Half think the U.S. Constitution should be amended to define marriage as a union between a man and a woman and half do not.
Seems pretty clear to me what it is that this country cares about, and what leads the voting habits of many.