[354] Throughout most of 2007, Bush's approval rating hovered in the mid-thirties;[355] the average for his entire second term was 37 percent, according to Gallup.[356]

Protest against the Iraq War in New London, Connecticut on May 23, 2007
By the beginning of 2008, his final year in office, Bush's approval rating had dropped to a low of just 19 percent, largely from the loss of support among Republicans.[338] Commenting on his low poll numbers and accusations of being "the worst president",[357][358] Bush would say, "I make decisions on what I think is right for the United States based upon principles. I frankly don't give a damn about the polls."[359]
There were calls for Bush's impeachment, though most polls showed a plurality of Americans would not support such an action.[360] The arguments offered for impeachment usually centered on the NSA warrantless surveillance controversy,[361] the Bush administration's justification for the war in Iraq, and alleged violations of the Geneva Conventions.