2004 United States Senate election in Pennsylvania

2004 United States Senate election in Pennsylvania

← 1998 November 2, 2004 2010 →
 
Nominee Arlen Specter Joe Hoeffel
Party Republican Democratic
Popular vote 2,925,080 2,334,126
Percentage 52.62% 41.99%

County results
Specter:      40–50%      50–60%      60–70%      70–80%
Hoeffel:      40–50%      70–80%

U.S. senator before election

Arlen Specter
Republican

Elected U.S. Senator

Arlen Specter
Republican

The 2004 United States Senate election in Pennsylvania was held on November 2, 2004. Incumbent Republican Senator Arlen Specter won re-election to a fifth term. As of 2024, this is the last time a Republican statewide candidate won Montgomery and Delaware Counties and won more than 25% of the vote in Philadelphia. Specter later lost renomination in 2010 as a Democrat, having joined the party in April 2009. Specter’s party switch marked the first time since 1947 that Democrats held both of Pennsylvania’s U.S. Senate seats.