Skip to content

1998 Senate elections · Iowa history

Iowa U.S. Senate election 1998

Chuck Grassley REP +37.9 · Class III seat · held 11/3/98

Votes counted
947,907
Margin
37.9 pts
Seat held by
Republicanheld

General election 11/3/98

CandidatePartyVotesShareBar
Chuck Grassley WonREP648,48068.41%
David OsterbergDEM289,04930.49%
Susan MarcusNLP7,5610.80%
Margaret TroweSWP2,5420.27%
Scattering—2750.03%
Total947,907

Official source: Election-Statistics

Other Iowa Senate races

YearSeatWinnerMargin
2022Class IIIChuck Grassley12.0
2020Class IIJoni K. Ernst6.5
2016Class IIIChuck Grassley24.4
2014Class IIJoni K. Ernst8.3
2010Class IIIChuck Grassley31.1
2008Class IITom Harkin25.4
2004Class IIIChuck Grassley42.3
2002Class IITom Harkin10.4
1998Class IIIChuck Grassley37.9
1996Class IITom Harkin5.1
1992Class IIIChuck Grassley42.4
1990Class IITom Harkin9.1

Full Iowa Senate history →

Questions and answers

Who won the 1998 Iowa Senate race?

Chuck Grassley (REP) won with 68.4% of the vote, ahead of David Osterberg (30.5%), a margin of 37.9 points.

Did the Iowa Senate seat change party in 1998?

No. The Republican Party held it.

How many votes were cast in the 1998 Iowa Senate race?

947,907 votes were counted for the candidates in the general election.

Compiled by FiveThirtyEight from the official source linked above.