United States Senate elections in Iowa, 1992-2014

The following is a list of United States Senate elections held in the state of Iowa from 1992 to 2014.

Class II

On November 5, 2002, Tom Harkin won re-election to the United States Senate. He defeated Greg Ganske (R), Richard J. Moore (L), Timothy A. Harthan (Iowa Green Party) in the general election.

U.S. Senate, Iowa General Election, 2002
Party		Candidate	Vote %	Votes
	Democratic	Tom Harkin incumbent	54.2%	554,278
	Republican	Greg Ganske	43.8%	447,892
	Libertarian	Richard J. Moore	0.9%	8,864
	Green	Timothy A. Harthan	1.1%	11,340
	N/A	Write-in	0.1%	701
Total Votes				1,023,075

U.S. Senate, Iowa General Election, 2008
Party		Candidate	Vote %	Votes
	Democratic	Tom Harkin Incumbent	62.7%	941,665
	Republican	Christopher Reed	37.3%	560,006
	N/A	Write-ins	0.1%	1,247
Total Votes				1,502,918

U.S. Senate, Iowa General Election, 2014

Party		Candidate	Vote %	Votes
	Republican	Joni Ernst	52.1%	588,575
	Democratic	Bruce Braley	43.8%	494,370
	Independent	Rick Stewart	2.4%	26,815
	Libertarian	Douglas Butzier	0.7%	8,232
	Independent	Ruth Smith	0.5%	5,873
	Independent	Bob Quast	0.4%	4,724
	Write-in	Other	0.1%	1,111
Total Votes				1,129,700
Source: Iowa Secretary of State Official Results

Class III

Iowa U.S. Senate, 1992
Party		Candidate	Vote %	Votes
	Republican	Chuck Grassley Incumbent	69.6%	899,761
	Democratic	Jean Lloyd-Jones	27.2%	351,561
	Natural Law	Stuart Zimmerman	1.3%	16,403
	Independent	Sue Atkinson	0.5%	6,277
	Independent	Mel Boring	0.4%	5,508
	Independent	Rosanne Freeburg	0.4%	4,999
	Grass Roots	Carl Eric Olsen	0.3%	3,404
	Independent	Richard O'Dell Hughes	0.2%	2,918
	Socialist Workers	Cleve A. Pulley	0.1%	1,370
	N/A	Write-ins	0%	293
Total Votes				1,292,494

Iowa U.S. Senate, 1998
Party		Candidate	Vote %	Votes
	Republican	Chuck Grassley Incumbent	68.4%	648,480
	Democratic	David Osterberg	30.5%	289,049
	Natural Law	Susan Marcus	0.8%	7,561
	Socialist Workers	Margaret Trowe	0.3%	2,542
	Independent	Write-ins	0%	275
Total Votes				947,907

Iowa U.S. Senate, 2004
Party		Candidate	Vote %	Votes
	Republican	Chuck Grassley Incumbent	70.2%	1,038,175
	Democratic	Arthur Small	27.9%	412,365
	Libertarian	Christy Ann Welty	1%	15,218
	Green	Daryl A. Northrup	0.8%	11,121
	Socialist Workers	Edwin Fruit	0.1%	1,874
	N/A	Write-ins	0%	475
Total Votes				1,479,228

U.S. Senate, Iowa General Election, 2010
Party		Candidate	Vote %	Votes
	Republican	Chuck Grassley Incumbent	64.4%	718,215
	Democratic	Roxanne Conlin	33.3%	371,686
	Libertarian	John Heiderscheit	2.3%	25,290
Total Votes				1,115,191