2004 United States Senate election in Florida
November 2, 2004
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County results Martinez: 40–50% 50–60% 60–70% 70–80% Castor: 40–50% 50–60% 60–70% 70–80% | |||||||||||||||||
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| Elections in Florida |
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| Government |
The 2004 United States Senate election in Florida took place on November 2, 2004, alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections. Democratic incumbent Bob Graham ran unsuccessfully for president of the United States instead of seeking a fourth term. Mel Martínez won the open race to succeed Graham over Betty Castor.
Primary elections were held on August 31, 2004. Castor defeated U.S. representative Peter Deutsch to win the Democratic nomination, while Martínez won the Republican nomination over 2000 nominee Bill McCollum and businessman Doug Gallagher with the support of President George W. Bush.
In the general election, Martínez won the open seat with 49.4 percent of the vote to 48.3 percent for Castor. This was the first open election for this seat since 1974 and the closest race of the 2004 United States Senate elections.As of 2026, this is the last election where an incumbent senator opted not to run for re-election in Florida.