United States Senate election in Iowa, 1998

United States Senate election in Iowa, 1998

November 3, 1998

Nominee Chuck Grassley David Osterberg Party Republican Democratic Popular vote 648,480 289,049 Percentage 68.41% 30.49%

County Results

U.S. senator before election Chuck Grassley Republican Elected U.S. Senator Chuck Grassley Republican

The 1998 United States Senate election in Iowa was held on November 3, 1998. Incumbent Republican United States Senator Chuck Grassley sought re-election to a fourth term in the United States Senate, facing off against former State Representative David Osterberg, who won the Democratic nomination unopposed. Grassley had not faced a competitive election since 1980; this year proved no different, and Grassley crushed Osterberg to win a fourth term.

Democratic primary

Candidates

• David Osterberg, former Iowa State Representative

Results

Democratic primary results
Party		Candidate	Votes	%
	Democratic	David Osterberg	86,064	99.45
	Democratic	Write-ins	476	0.55
Total votes			86,540	100.00

Republican primary

Candidates

• Chuck Grassley, incumbent United States Senator

Results

Republican primary results
Party		Candidate	Votes	%
	Republican	Chuck Grassley (inc.)	149,943	99.72
	Republican	Write-ins	419	0.28
Total votes			150,362	100.00

General election

Results

United States Senate election in Iowa, 1998

Party		Candidate	Votes	%	±%
	Republican	Chuck Grassley (inc.)	648,480	68.41%	-1.20%
	Democratic	David Osterberg	289,049	30.49%	+3.29%
	Natural Law	Susan Marcus	7,561	0.80%	-0.47%
	Socialist Workers	Margaret Trowe	2,542	0.27%	+0.16%
	Write-ins		275	0.03%
Majority			359,431	37.92%	-4.50%
Turnout			947,907
	Republican hold		Swing