Despite my best efforts, it was Republicans who first guessed the identity of the Iowa Democratic Party's mystery keynote speaker for the October 16 Jefferson-Jackson Dinner.
Spoiler Alerts: Iowasnewzliter was first, followed quickly by Craig Robinson at Iowa Republican.
If you still want to play, here are two (last?) clues:
And my hint: think broadly when you think "national office."
The Dem's guessing game got stepped on a bit by the Republicans announcing Sarah Palin as speaker at their Reagan dinner (I goofed and called it a Lincoln dinner). But they did take a shot in tweeting this unofficial clue: "Our special guest served a full term in public office...as opposed to someone else we know." Ouch!