Let me first say I don't know anyone who is undecided. However, here are a couple of things I have heard about undecideds that I could see happening.

a) A girl on a blog said her brother is decided and has told her so even though he won't say who he is voting for.  He doesn't feel it is anyone's business so he claims he is undecided even though he has actually decided.

b) Someone on cable suggested that some folks don't like mccain/palin but don't trust Obama because he is just too different for them.  The commentator stated these tended to be older whites so he felt they would either vote for mccain or not vote at all.

I think at this point, if you don't know who you're voting for you just might not stay in the long lines.

Same with McCain voters.  I mean, if I'm a psyched and dedicated Obama voter, I'm 100% staying in line to vote regardless of what might come up.  If I'm a quasi interested McCain voter who's kinda queasy because socialism kinda sounds bad, and who thinks Sarah Palin is hot, um... I don't know if I'm going to miss out on 4 hours of work to stand in a line.

When we're 2 days before an election and polls have 9% undecided "likely voters", I think there's got to be some conflagration between "likely voters" and "registered voters".

You are probably right, actually hopefully right if they aren't voting for Obama.  

I think it is safe to say these are the Bradley/Wilder-effect voters.

In 2004, it was hard to find undecided voters enough to fill a town hall debate.  Remember?

If you are truly undecided at this point, logic is something you do not possess and rationalism is lost on you.  So, trying to apply some reasoned argument for why they would go this way or that is pointless.  How do you predict how irrational people will behave?  It seems to me that you can't.  It's like asking why some people are willing to pay 60+ times earnings for certain stocks.  For all we know, these wild children could put a dairy creamer in their coffee tomorrow even though they are lactose intolerant.

If the undecideds are basically irrational, that would strongly imply McCain voters.

Why tell the world you saw a porn movie?  Porn movies, are about porn, and stereotypes, and sexual fantasies, and shame and guilt. Its not a movie that other people would talk about. Whereas if you saw a mainstream, or indie flick like Juno, O Brother Where Art thou?  You want to tell people there's this great movie, you should go see it.  Voting is like seeing a porn movie,especially when a msm, or campaign person asks you, so they know. My Union rep called me for such a thing. I made sure that I gave them from beginning to end, that I was leaning towards Obama but hadn't committed, because I don't think they need to know that. Now my friends, that's a different matter-they're my friends. I seriously doubt that in this election, people are on the fence.