I haven't seen this mentioned around here, but I also don't catch every diary. Even if it has come up, I think it is worth mentioning again.
On her show yesterday (or maybe Friday), Rachel mentioned a bit of an oddity in North Carolina. They have a "straight party" box on the ballot. If you select Democrat (or Republican or Libertarian) in the straight party box, it means you vote for all Democrats (or whatever). This is pretty cool, but there is one problem, it doesn't include the presidential vote. So, if you vote straight party and don't select a presidential preference, you will not cast a vote for president.
In 2000, the undervote was 3.13%. In 2004, the undervote was 2.57%. This election is going to be really close and a 2 - 3% undervote could change the outcome.
If you are in North Carolina or know people in North Carolina, please make sure everyone knows to select a presidential preference if they are voting straight party.