No, Iraq should disqualify Clinton from becoming President, but apparently all the "liberals" seem to be suffering from collective amnesia.
Given the information that was put forward to them at the time, it wouldn't have made sense to vote against the resolution unless you were a McGovern-level dove.
Generally, when a lie is told, the blame falls on the people telling the lie, not the people who believe it to be true and have no reason to think otherwise.
Twenty-one Democrats in the Senate and more in the House voted against the resolution. Opposition was hardly a fringe position, just not one that was in accord with the sacrosanct Beltway consensus.