You can certainly accuse them of being poorly informed about the Mideast if they believed Bush's lies. And you can call them overly trusting of Bush's lies. But they did not perpetuate the lies. They took Bush's word, backed by Colin Powell, which leant it credibility, and voted accordingly.

Call them uninformed, call them cowards (I have), but they were NOT the ones who lied, and they were not the ones who went into the invasion with no exit strategy. The Republicans did that.

Also keep in mind that there are many fresh faces on the Dem side of the aisle who would agree that the Dems who voted for the Iraq quagmire were uninformed and cowardly at the time.