AP:

With a 4.4 percentage point margin of error, [a]mong Democrats, Barack Obama got 28 percent, while Hillary Rodham Clinton had 25 percent, and John Edwards had 23 percent. Other candidates were in single digits. More than half of likely caucus-goers in both races say they could change their minds. A chunk are undecided.

An Associated Press-Pew poll being released this week echoes the competitive situations in Iowa.

“We haven’t had wide-open races on both sides for some time. This is absolutely unprecedented,” said David Redlawsk, a University of Iowa political scientist. “And the impact of Iowa is unknown because the environment we’re in is different.”

Edwards isn’t doing too bad, for a guy neither Hillary Obama mention, and whose message is almost entirely suppressed by our famously free press.

Why would that be? Any of it, or all of it, eh?