click to enlarge I have always considered Iowa as being volatile when it comes to elections. When Dean charged through the state in 2004, Iowans turned to a war hero and picked John Kerry. I doubt they knew he would take abuse laying down.

So as we inch closer to the election we begin to see the volatility all over again. This time it is springing up in the InsiderAdvantage poll:

John Edwards has leapfrogged over his rivals Hillary Clinton and Barack Obama, and leads the Democratic field in Iowa, according to the latest InsiderAdvantage/Majority Opinion poll. In the Republican caucus race, Mike Huckabee continues to hold a narrow lead over Mitt Romney.

The race among the three top Democrats is extremely close, with the potential for any of them to finish first – or third.

Edwards leads with 30 percent in a poll of Democratic voters who said they intend to participate in the Jan. 3 presidential caucuses, followed by Clinton with 26 percent and Obama with 24 percent. When the sample was narrowed to the most likely caucus-goers, based on several questions, Obama leads Edwards by less than a percentage point with 27 percent, with Clinton in third place at 24 percent.

I bet Huma is on bartender duty today.