Template:2004 Canadian federal election/on-hn

Electoral district	Candidates												Incumbent
	Liberal		Conservative		NDP		Green		Christian Heritage		Other
Ancaster—Dundas—Flamborough—Westdale		Russ Powers 21,935 39.69%		David Sweet 19,135 34.63%		Gordon Guyatt 11,557 20.91%		David Januczkowski 2,636 4.77%						John Bryden§ Ancaster—Dundas—Flamborough—Aldershot
Burlington		Paddy Torsney 27,423 44.96%		Mike Wallace 23,389 38.35%		David Carter Laird 6,581 10.79%		Angela Reid 3,169 5.20%		John Herman Wubs 429 0.70%				Paddy Torsney
Halton		Gary Carr 27,362 48.35%		Dean Martin 21,704 38.35%		Anwar Naqvi 4,642 8.20%		Frank Marchetti 2,889 5.10%						Julian Reed†
Hamilton Centre		Stan Keyes 14,948 33.70%		Leon Patrick O'Connor 6,714 15.13%		David Christopherson 20,321 45.81%		Anne Marie Pavlov 1,422 3.21%		Stephen Downey 520 1.17%		Michael James Baldasaro (NA) 345 0.78%		Stan Keyes Hamilton West
												Jamilé Ghaddar (M-L) 91 0.21%
Hamilton East—Stoney Creek		Tony Valeri 18,417 37.74%		Fred Eisenberger 10,888 22.31%		Tony DePaulo 17,490 35.84%		Richard Safka 1,446 2.96%				Sam Cino (Ind.) 393 0.81% ———— Bob Mann (Comm.) 166 0.34%		Tony Valeri Stoney Creek
													merged district
														Sheila Copps§ Hamilton East
Hamilton Mountain		Beth Phinney 18,548 34.81%		Tom Jackson 15,590 29.26%		Chris Charlton 17,552 32.94%		Jo Pavlov 1,378 2.59%				Paul Lane (M-L) 214 0.40%		Beth Phinney
Niagara Falls		Victor Pietrangelo 18,745 36.48%		Rob Nicholson 19,882 38.70%		Wayne Gates 10,680 20.79%		Ted Mousseau 2,071 4.03%						Gary Pillitteri†
Niagara West—Glanbrook		Debbie Zimmerman 20,210 39.01%		Dean Allison 20,874 40.29%		Dave Heatley 7,681 14.82%		Tom Ferguson 1,761 3.40%		David Bylsma 1,107 2.14%		Phil Rose (CAP) 179 0.35%	new district
St. Catharines		Walt Lastewka 21,277 40.44%		Leo Bonomi 18,261 34.71%		Ted Mouradian 10,135 19.26%		Jim Fannon 1,927 3.66%		Linda Klassen 751 1.43%		Elaine Couto (M-L) 61 0.12%		Walt Lastewka
												Jane Elizabeth Paxton (CAP) 204 0.39%
Welland		John Maloney 19,642 39.63%		Mel Grunstein 12,997 26.22%		Jody Di Bartolomeo 14,623 29.50%		Ryan McLaughlin 1,454 2.93%		Irma D. Ruiter 735 1.48%		Ron Walker (M-L) 113 0.23%		John Maloney Erie—Lincoln
													merged district
														Tony Tirabassi§ Niagara Centre