The poll was conducted by Ipsos Public Affairs, the highly-regarded non-partisan polling company. The poll interviewed 1,001 U.S. adults on October 8-9.
The poll found that 50% agreed with the statement:"If President Bush did not tell the truth about his reasons for going to war with Iraq, Congress should consider holding him accountable by impeaching him."
44% disagreed, and 6% said they didn't know or declined to answer. The poll has a +/- 3.1% margin of error.
Those who agreed with the statement were also more passionate: 39% strongly agreed, while 30% strongly disagreed.
"The results of this poll are truly astonishing," said AfterDowningStreet.org co-founder Bob Fertik. "Bush's record-low approval ratings tell just half of the story, which is how much Americans oppose Bush's policies on Iraq and other issues. But this poll tells the other half of the story - that a solid plurality of Americans want Congress to consider removing Bush from the White House."