The election results shown in the table, where the Democrats gained seats in both the Senate and the House of Representatives while Republicans lost seats, were likely influenced by the federal response to Hurricane Katrina.
The response to Hurricane Katrina in 2005 drew significant criticism towards the federal government, particularly toward the Bush administration and its handling of the disaster. This dissatisfaction likely contributed to the shift in voter sentiment, leading to increased support for Democratic candidates in the 2006 mid-term elections.