Query: How large of a gap was there between Bush's and Kerry's votes? 
Context: Bush's margin of victory in the popular vote was the smallest ever for a reelected incumbent president, but marked the first time since his father's victory 16 years prior that a candidate won a majority of the popular vote. The electoral map closely resembled that of 2000, with only three states changing sides: New Mexico and Iowa voted Republican in 2004 after having voted Democratic in 2000, while New Hampshire voted Democratic in 2004 after previously voting Republican.