But first - exactly what is a caucus? Fox has a simple summation:
What Is a Caucus and How Does It Work?
Here's what some folks have to say about the goings on today in Iowa:
Jamie Jeffords, over at Eye of Polyphemus, has some Iowa Predictions
DaTechGuy says: The first day that actually counts in Iowa
Phoebe's Detention Room: My Iowa Caucus Day Thoughts