The 2004 United States House of Representatives elections in New Jersey were held on November 2, 2004, to determine who would represent the people of New Jersey in the United States House of Representatives. This election coincided with national elections for U.S. President, and the U.S. House and U.S. Senate. There was no concurrent election for Senator or Governor in the state. New Jersey has thirteen seats in the House, apportioned according to the 2000 United States census. Representatives are elected for two-year terms.
Incumbent Democrat Rob Andrews won. This district covers Camden County. Shortly after losing the election, Hutchison switched parties and became a member of the Democratic Party. He was later elected to the Gloucester Township Committee and New Jersey General Assembly in 2023.
Incumbent Republican Frank A. LoBiondo defeated Democrat Timothy Robb. This district covers the southern part of the state.
Incumbent Republican Jim Saxton defeated Democratic State Assemblyman Herb Conaway. The district covers Burlington and Ocean counties. Twenty years later in 2024, Conaway would be elected to represent the district.
Incumbent Republican Chris Smith defeated Democrat Amy Vasquez. This district covers 4 counties in the central part of the state.
Incumbent Republican Scott Garrett defeated Democrat Dorothea Anne Wolfe. This district covers the northern border of the state.
Incumbent Democrat Frank Pallone defeated Republican challenger Sylvester Fernandez. Between 2003 and 2013, this district covered parts of Monmouth, Middlesex, Somerset, and Union counties.
Incumbent Republican Mike Ferguson defeated Democrat Steve Brozak. Between 2003 and 2013, this district covered parts of Middlesex, Union, Somerset, and Hunterdon counties.
Brozak, a former Republican who switched party lines to run, launched his campaign with a front-page story in The Wall Street Journal. He focused his message on the management of Operation Iraqi Freedom, warning that the shortage of U.S. troops presented an insurmountable obstacle to its mission and calling for a modified strategy to subdue insurgency and create a stable government in Iraq. Writing for Salon, Michelle Goldberg referred to his campaign as "a referendum on Bush's military folly". Brozak also called for deregulation of stem cell research and fair trade with foreign countries.
Brozak was a primetime speaker at the 2004 Democratic National Convention, where he criticized the Bush administration for its lack of planning in advance of the invasion of Iraq.
Incumbent Democrat Bill Pascrell defeated Republican George Ajjan. This district covers Essex and Passaic counties.
Incumbent Democrat Steve Rothman defeated Republican Edward Trawinski. This district covers mostly Bergen County.
No Republican challenged incumbent Democrat Donald M. Payne for this seat. Only minor parties also contested the election. This district covers a heavily urbanized area, which includes the city of Newark.
Incumbent Republican Rodney Frelinghuysen defeated Democrat James Buell. This district covers mostly Morris County.
Incumbent Democrat Rush Holt defeated Republican Bill Spadea. This district covers 5 suburban counties in the central part of the state. After losing the election to Holt, Spadea became a radio talk show host, made a run for the General Assembly in 2012, and ran for Governor of New Jersey in 2025.
Incumbent Democrat Bob Menendez defeated Republican Richard Piatkowski. This is a heavily urbanized district.
In the primary election, Menendez easily survived a challenge from Steve Fulop, who had received national attention for resigning from Goldman Sachs to join the Marine Corps following the September 11 attacks. Fulop would later go on to serve as mayor of Jersey City and ran for Governor of New Jersey in 2025, losing the primary to Mikie Sherrill.
Fulop was hand-picked to challenge Menendez by Jersey City mayor Glenn Cunningham, who had an ongoing bitter feud with Menendez. Cunningham died from a heart attack on May 25.