Blacks are solidly for Mr Obama, but many swing voters are unsure.
The court appears to have divided along traditional liberal and conservative lines. And again all eyes are on the swing voter, Justice Anthony Kennedy.
Germany may be the swing voter in such cases.
John Roberts, the chief justice, is a conservative, as are Antonin Scalia, Samuel Alito and Clarence Thomas. Anthony Kennedy, though conservative on most issues, is the court's swing voter.
Here the most important type of elector may not be swing voters but those too furious to vote at all.
Evangelicals may love a hollering Southern preacher; swing voters are not so sure.
