In 2004, Southbury voted for President George W. Bush; of 11,523 votes cast for the top five candidates, 57% voted for the incumbent Bush, with 42% for Democrat John F. Kerry.
In 2004, Southbury voted for the incumbent Republican President George W. Bush. With 11,523 votes cast for the top 5 candidates, 57% voted for President Bush and 42% for Democrat John F. Kerry.