Not caught redhanded, but damn close:
The McCain camp today disputed rumors that presumptive vice presidential nominee Sarah Palin was ever registered with the secessionist Alaska Independence Party by releasing years of voter registration history . . . but it looks like that doesn't apply to her husband.
This afternoon, the director of Division of Elections in Alaska, Gail Fenumiai, told TPMmuckraker that Todd Palin registered in October 1995 to the Alaska Independence Party, a radical group that advocates for Alaskan secession from the United States.
I'm sorry, I don't have her making it to November guys. I just don't.
UPDATE: Commenter Jaybird writes:
As a libertarian nutball, I've gotta say that half of the attacks on Palin make me like her. Hearing she married a third party kinda guy? How is that bad? She married a nut. So did *MY* wife
Let's be clear. Nothing's wrong with belonging to a third party. But here's the thing--she's on a ticket whose motto is "Country First," and whose headliner has repeatedly accused Obama of putting himself before country. Meanwhile her husband is a member of a political party that advocates secession. Put the shoe on the other foot. What if Michelle Obama belonged to a party advocating some sort of secession? What would happen?
UPDATE#2: Closed. Nuff said, I think.