Election Results for Jefferson County, IA -- RightDataUSA.com

2020-2022 Components	Number	Rate
Births:	332	10.6
Deaths:	455	14.5
Net Migration:	-270	-8.6
Net Immigration:	405	12.9

Recent Trends
	Votes	Δ Margin	Swing %
2020 vs. 2016	R +695	R +86	R + 0.9%
D +609
2020 vs. 2012	R +1,007	R +1,486	R + 18.0%
D -479
2020 vs. 2008	R +1,119	R +1,870	R + 22.2%
D -751

2016 vs. 2008	R +424	R +1,784	R + 21.3%
D -1,360
How to interpret this table

Click on the Year to view county-level data for that election.

Year	Turnout	Winner			Runner-Up			Other		Total Votes	Diff (St)	Diff (US)	PSV
2020	72%	Donald Trump* (R)	4,443	49.6%	Joe Biden (D)	4,319	48.2%	197 [+]	2.2%	8,959	-3	3	0.53%
[-] Other candidates in 2020: Jo Jorgensen (Lbt) 95 (1.1%);
2016	62%	Donald Trump (R)	3,748	46.0%	Hillary Clinton (D)	3,710	45.5%	698 [+]	8.6%	8,156	-5	0	0.52%
[-] Other candidates in 2016: Jill Stein (Grn) 256 (3.1%); Gary Johnson (Lbt) 246 (3.0%); Evan McMullin (I) 25 (0.3%);
2012	63%	Barack Obama* (D)	4,798	56.2%	Mitt Romney (R)	3,436	40.3%	296 [+]	3.5%	8,530	-6	-7	0.54%
[-] Other candidates in 2012: Gary Johnson (Lbt) 126 (1.5%);
2008	64%	Barack Obama (D)	5,070	58.7%	John McCain (R)	3,324	38.5%	238 [+]	2.8%	8,632	-6	-7	0.56%
[-] Other candidates in 2008: Ralph Nader (I) 51 (0.6%); Bob Barr (Lbt) 32 (0.4%);
2004	65%	John Kerry (D)	4,490	54.2%	George W. Bush* (R)	3,648	44.1%	143 [+]	1.7%	8,281	-6	-7	0.55%
[-] Other candidates in 2004: Ralph Nader (I) 41 (0.5%);
2000	62%	George W. Bush (R)	3,248	43.0%	Albert Gore, Jr. (D)	2,863	37.9%	1,437 [+]	19.0%	7,548	-5	-5	0.57%
[-] Other candidates in 2000: Ralph Nader (Grn) 206 (2.7%); Pat Buchanan (Ref) 45 (0.6%);
1996	60%	Bill Clinton* (D)	2,597	35.1%	Robert Dole (R)	2,541	34.4%	2,259 [+]	30.5%	7,397	-6	-6	0.60%
[-] Other candidates in 1996: Ross Perot (Ref) 571 (7.7%); Ralph Nader (Grn) 47 (0.6%); Harry Browne (Lbt) 39 (0.5%);
1992	68%	Bill Clinton (D)	2,562	30.7%	George Bush* (R)	2,541	30.5%	3,238 [+]	38.8%	8,341	-7	-7	0.62%
[-] Other candidates in 1992: Ross Perot (I) 1,241 (14.9%);
1988	59%	George Bush (R)	3,614	49.5%	Michael Dukakis (D)	3,594	49.3%	88 [+]	1.2%	7,296	5	-4	0.60%
[-] Other candidates in 1988: Ron Paul (Lbt) 40 (0.5%);
1984	63%	Ronald Reagan* (R)	4,727	61.2%	Walter Mondale (D)	2,961	38.3%	37	0.5%	7,725	8	2	0.59%
[-] Other candidates in 1984:
1980	59%	Ronald Reagan (R)	4,099	56.2%	Jimmy Carter* (D)	2,577	35.3%	623 [+]	8.5%	7,299	5	5	0.55%
[-] Other candidates in 1980: John Anderson (I) 505 (6.9%); Edward Clark (Lbt) 99 (1.4%);
1976	64%	Gerald Ford* (R)	3,746	51.7%	Jimmy Carter (D)	3,377	46.6%	121 [+]	1.7%	7,244	2	4	0.57%
[-] Other candidates in 1976: Eugene McCarthy (I) 73 (1.0%);
1972	64%	Richard Nixon* (R)	4,628	64.8%	George McGovern (D)	2,362	33.1%	149 [+]	2.1%	7,139	7	4	0.58%
[-] Other candidates in 1972: John Schmitz (Amer) 144 (2.0%);
1968	69%	Richard Nixon (R)	4,130	59.5%	Hubert Humphrey (D)	2,411	34.7%	398 [+]	5.7%	6,939	7	16	0.59%
[-] Other candidates in 1968: George Wallace (AIP) 377 (5.4%);
1964	69%	Lyndon Johnson* (D)	4,135	59.8%	Barry Goldwater (R)	2,755	39.8%	26	0.4%	6,916	2	1	0.58%
[-] Other candidates in 1964:
1960	77%	Richard Nixon (R)	4,942	64.0%	John Kennedy (D)	2,780	36.0%	0	0.0%	7,722	7	14	0.61%
[-] Other candidates in 1960:
1956	72%	Dwight Eisenhower* (R)	4,807	62.8%	Adlai Stevenson (D)	2,845	37.1%	7	0.1%	7,659	4	5	0.62%
[-] Other candidates in 1956:
1952	77%	Dwight Eisenhower (R)	5,630	69.1%	Adlai Stevenson (D)	2,470	30.3%	49	0.6%	8,149	5	14	0.64%
[-] Other candidates in 1952:
1948	67%	Thomas Dewey (R)	3,906	55.1%	Harry Truman* (D)	3,033	42.8%	149 [+]	2.1%	7,088	8	10	0.68%
[-] Other candidates in 1948: Henry Wallace (Prog) 29 (0.4%); Strom Thurmond (StsRts) 0 (0.0%);
1944	69%	Thomas Dewey (R)	4,335	59.0%	Franklin Roosevelt* (D)	2,926	39.8%	83	1.1%	7,344	7	13	0.70%
[-] Other candidates in 1944:
1940	78%	Wendell Willkie (R)	4,891	58.7%	Franklin Roosevelt* (D)	3,402	40.8%	43	0.5%	8,336	7	14	0.69%
[-] Other candidates in 1940:
1936	78%	Alf Landon (R)	4,037	50.8%	Franklin Roosevelt* (D)	3,690	46.5%	214 [+]	2.7%	7,941	8	14	0.69%
[-] Other candidates in 1936: William Lemke (Union) 189 (2.4%); Norman Thomas (Soc) 3 (0.0%);
1932	69%	Franklin Roosevelt (D)	4,056	57.0%	Herbert Hoover* (R)	2,955	41.6%	99 [+]	1.4%	7,110	2	2	0.69%
[-] Other candidates in 1932: Norman Thomas (Soc) 52 (0.7%);
1928	70%	Herbert Hoover (R)	4,919	69.5%	Al Smith (D)	2,159	30.5%	0	0.0%	7,078	8	11	0.70%
[-] Other candidates in 1928: Norman Thomas (Soc) 0 (0.0%);
1924	65%	Calvin Coolidge (R)	4,062	61.6%	Robert LaFollette (Prog)	1,279	19.4%	1,249 [+]	19.0%	6,590	7	8	0.67%
[-] Other candidates in 1924: John Davis (D) 1,249 (19.0%);
1920	60%	Warren Harding (R)	4,558	74.6%	James Cox (D)	1,450	23.7%	100 [+]	1.6%	6,108	4	14	0.68%
[-] Other candidates in 1920: Aaron Watkins (Proh) 45 (0.7%); Eugene Debs (Soc) 34 (0.6%); Parley Christiansen (FL) 13 (0.2%);
1916	40%	Charles Evans Hughes (R)	2,167	54.6%	Woodrow Wilson* (D)	1,734	43.7%	67 [+]	1.7%	3,968	0	9	0.77%
[-] Other candidates in 1916: James Hanly (Proh) 37 (0.9%); Allan Benson (Soc) 29 (0.7%);
1912	38%	William Taft* (R)	1,378	37.6%	Woodrow Wilson (D)	1,311	35.8%	973 [+]	26.6%	3,662	13	14	0.74%
[-] Other candidates in 1912: Theodore Roosevelt (Prog) 786 (21.5%); Eugene Chafin (Proh) 115 (3.1%); Eugene Debs (Soc) 72 (2.0%);
1908	42%	William Taft (R)	2,271	58.3%	William J. Bryan (D)	1,439	36.9%	186 [+]	4.8%	3,896	3	7	0.79%
[-] Other candidates in 1908: Eugene Chafin (Proh) 166 (4.3%); Eugene Debs (Soc) 17 (0.4%); Thomas Hisgen (I) 1 (0.0%);
1904	39%	Theodore Roosevelt (R)	2,330	62.2%	Alton Parker (D)	1,172	31.3%	242 [+]	6.5%	3,744	-1	6	0.77%
[-] Other candidates in 1904: Silas Swallow (Proh) 194 (5.2%); Eugene Debs (Soc) 32 (0.9%); Thomas Watson (Pop) 16 (0.4%);
1900	42%	William McKinley* (R)	2,482	58.7%	William J. Bryan (D)	1,612	38.1%	132 [+]	3.1%	4,226	1	7	0.80%
[-] Other candidates in 1900: John Woolley (Proh) 118 (2.8%); Eugene Debs (Soc) 9 (0.2%);

* incumbent PSV: percent of state vote

2020 President, Jefferson County, IA

Candidate

Votes

Pct

Joe Biden (D)

4,319

48.2%

Donald Trump* (R)

4,443

49.6%

Jo Jorgensen (Lbt)

1.1%

Other

102

1.1%

TOTAL

8,959

Turnout: 72%	Diff (St): -3	Diff (US): 3

2016 President, Jefferson County, IA

Candidate

Votes

Pct

Hillary Clinton (D)

3,710

45.5%

Donald Trump (R)

3,748

46.0%

Gary Johnson (Lbt)

246

3.0%

Jill Stein (Grn)

256

3.1%

Evan McMullin (I)

0.3%

Other

171

2.1%

TOTAL

8,156

Turnout: 62%	Diff (St): -5	Diff (US): 0

2012 President, Jefferson County, IA

Candidate

Votes

Pct

Barack Obama* (D)

4,798

56.2%

Mitt Romney (R)

3,436

40.3%

Gary Johnson (Lbt)

126

1.5%

Other

170

2.0%

TOTAL

8,530

Turnout: 63%	Diff (St): -6	Diff (US): -7

2008 President, Jefferson County, IA

Candidate

Votes

Pct

Barack Obama (D)

5,070

58.7%

John McCain (R)

3,324

38.5%

Ralph Nader (I)

0.6%

Bob Barr (Lbt)

0.4%

Other

155

1.8%

TOTAL

8,632

Turnout: 64%	Diff (St): -6	Diff (US): -7

2004 President, Jefferson County, IA

Candidate

Votes

Pct

George W. Bush* (R)

3,648

44.1%

John Kerry (D)

4,490

54.2%

Ralph Nader (I)

0.5%

Other

102

1.2%

TOTAL

8,281

Turnout: 65%	Diff (St): -6	Diff (US): -7

2000 President, Jefferson County, IA

Candidate

Votes

Pct

George W. Bush (R)

3,248

43.0%

Albert Gore, Jr. (D)

2,863

37.9%

Ralph Nader (Grn)

206

2.7%

Pat Buchanan (Ref)

0.6%

Other

1,186

15.7%

TOTAL

7,548

Turnout: 62%	Diff (St): -5	Diff (US): -5

1996 President, Jefferson County, IA

Candidate

Votes

Pct

Bill Clinton* (D)

2,597

35.1%

Robert Dole (R)

2,541

34.4%

Ross Perot (Ref)

571

7.7%

Ralph Nader (Grn)

0.6%

Harry Browne (Lbt)

0.5%

Other

1,602

21.7%

TOTAL

7,397

Turnout: 60%	Diff (St): -6	Diff (US): -6

1992 President, Jefferson County, IA

Candidate

Votes

Pct

Bill Clinton (D)

2,562

30.7%

George Bush* (R)

2,541

30.5%

Ross Perot (I)

1,241

14.9%

Other

1,997

23.9%

TOTAL

8,341

Turnout: 68%	Diff (St): -7	Diff (US): -7

1988 President, Jefferson County, IA

Candidate

Votes

Pct

George Bush (R)

3,614

49.5%

Michael Dukakis (D)

3,594

49.3%

Ron Paul (Lbt)

0.5%

Other

0.7%

TOTAL

7,296

Turnout: 59%	Diff (St): 5	Diff (US): -4

1984 President, Jefferson County, IA

Candidate

Votes

Pct

Ronald Reagan* (R)

4,727

61.2%

Walter Mondale (D)

2,961

38.3%

Other

0.5%

TOTAL

7,725

Turnout: 63%	Diff (St): 8	Diff (US): 2

1980 President, Jefferson County, IA

Candidate

Votes

Pct

Ronald Reagan (R)

4,099

56.2%

Jimmy Carter* (D)

2,577

35.3%

John Anderson (I)

505

6.9%

Edward Clark (Lbt)

1.4%

Other

0.3%

TOTAL

7,299

Turnout: 59%	Diff (St): 5	Diff (US): 5

1976 President, Jefferson County, IA

Candidate

Votes

Pct

Jimmy Carter (D)

3,377

46.6%

Gerald Ford* (R)

3,746

51.7%

Eugene McCarthy (I)

1.0%

Other

0.7%

TOTAL

7,244

Turnout: 64%	Diff (St): 2	Diff (US): 4

1972 President, Jefferson County, IA

Candidate

Votes

Pct

Richard Nixon* (R)

4,628

64.8%

George McGovern (D)

2,362

33.1%

John Schmitz (Amer)

144

2.0%

Other

0.1%

TOTAL

7,139

Turnout: 64%	Diff (St): 7	Diff (US): 4

1968 President, Jefferson County, IA

Candidate

Votes

Pct

Richard Nixon (R)

4,130

59.5%

Hubert Humphrey (D)

2,411

34.7%

George Wallace (AIP)

377

5.4%

Other

0.3%

TOTAL

6,939

Turnout: 69%	Diff (St): 7	Diff (US): 16

1964 President, Jefferson County, IA

Candidate

Votes

Pct

Lyndon Johnson* (D)

4,135

59.8%

Barry Goldwater (R)

2,755

39.8%

Other

0.4%

TOTAL

6,916

Turnout: 69%	Diff (St): 2	Diff (US): 1

1956 President, Jefferson County, IA

Candidate

Votes

Pct

Dwight Eisenhower* (R)

4,807

62.8%

Adlai Stevenson (D)

2,845

37.1%

Other

0.1%

TOTAL

7,659

Turnout: 72%	Diff (St): 4	Diff (US): 5

1952 President, Jefferson County, IA

Candidate

Votes

Pct

Dwight Eisenhower (R)

5,630

69.1%

Adlai Stevenson (D)

2,470

30.3%

Other

0.6%

TOTAL

8,149

Turnout: 77%	Diff (St): 5	Diff (US): 14

1948 President, Jefferson County, IA

Candidate

Votes

Pct

Harry Truman* (D)

3,033

42.8%

Thomas Dewey (R)

3,906

55.1%

Henry Wallace (Prog)

0.4%

Other

120

1.7%

TOTAL

7,088

Turnout: 67%	Diff (St): 8	Diff (US): 10

1944 President, Jefferson County, IA

Candidate

Votes

Pct

Franklin Roosevelt* (D)

2,926

39.8%

Thomas Dewey (R)

4,335

59.0%

Other

1.1%

TOTAL

7,344

Turnout: 69%	Diff (St): 7	Diff (US): 13

1940 President, Jefferson County, IA

Candidate

Votes

Pct

Franklin Roosevelt* (D)

3,402

40.8%

Wendell Willkie (R)

4,891

58.7%

Other

0.5%

TOTAL

8,336

Turnout: 78%	Diff (St): 7	Diff (US): 14

1936 President, Jefferson County, IA

Candidate

Votes

Pct

Franklin Roosevelt* (D)

3,690

46.5%

Alf Landon (R)

4,037

50.8%

William Lemke (Union)

189

2.4%

Norman Thomas (Soc)

0.0%

Other

0.3%

TOTAL

7,941

Turnout: 78%	Diff (St): 8	Diff (US): 14

1932 President, Jefferson County, IA

Candidate

Votes

Pct

Franklin Roosevelt (D)

4,056

57.0%

Herbert Hoover* (R)

2,955

41.6%

Norman Thomas (Soc)

0.7%

Other

0.7%

TOTAL

7,110

Turnout: 69%	Diff (St): 2	Diff (US): 2

1928 President, Jefferson County, IA

Candidate

Votes

Pct

Herbert Hoover (R)

4,919

69.5%

Al Smith (D)

2,159

30.5%

TOTAL

7,078

Turnout: 70%	Diff (St): 8	Diff (US): 11

1924 President, Jefferson County, IA

Candidate

Votes

Pct

Calvin Coolidge (R)

4,062

61.6%

John Davis (D)

1,249

19.0%

Robert LaFollette (Prog)

1,279

19.4%

TOTAL

6,590

Turnout: 65%	Diff (St): 7	Diff (US): 8

1920 President, Jefferson County, IA

Candidate

Votes

Pct

Warren Harding (R)

4,558

74.6%

James Cox (D)

1,450

23.7%

Eugene Debs (Soc)

0.6%

Parley Christiansen (FL)

0.2%

Aaron Watkins (Proh)

0.7%

Other

0.1%

TOTAL

6,108

Turnout: 60%	Diff (St): 4	Diff (US): 14

1916 President, Jefferson County, IA

Candidate

Votes

Pct

Woodrow Wilson* (D)

1,734

43.7%

Charles Evans Hughes (R)

2,167

54.6%

Allan Benson (Soc)

0.7%

James Hanly (Proh)

0.9%

Other

0.0%

TOTAL

3,968

Turnout: 40%	Diff (St): 0	Diff (US): 9

1912 President, Jefferson County, IA

Candidate

Votes

Pct

Woodrow Wilson (D)

1,311

35.8%

Theodore Roosevelt (Prog)

786

21.5%

William Taft* (R)

1,378

37.6%

Eugene Debs (Soc)

2.0%

Eugene Chafin (Proh)

115

3.1%

TOTAL

3,662

Turnout: 38%	Diff (St): 13	Diff (US): 14

1908 President, Jefferson County, IA

Candidate

Votes

Pct

William Taft (R)

2,271

58.3%

William J. Bryan (D)

1,439

36.9%

Eugene Debs (Soc)

0.4%

Eugene Chafin (Proh)

166

4.3%

Thomas Hisgen (I)

0.0%

Other

0.1%

TOTAL

3,896

Turnout: 42%	Diff (St): 3	Diff (US): 7

1904 President, Jefferson County, IA

Candidate

Votes

Pct

Theodore Roosevelt (R)

2,330

62.2%

Alton Parker (D)

1,172

31.3%

Eugene Debs (Soc)

0.9%

Silas Swallow (Proh)

194

5.2%

Thomas Watson (Pop)

0.4%

TOTAL

3,744

Turnout: 39%	Diff (St): -1	Diff (US): 6

1900 President, Jefferson County, IA

Candidate

Votes

Pct

William McKinley* (R)

2,482

58.7%

William J. Bryan (D)

1,612

38.1%

John Woolley (Proh)

118

2.8%

Eugene Debs (Soc)

0.2%

Other

0.1%

TOTAL

4,226

Turnout: 42%	Diff (St): 1	Diff (US): 7

* incumbent

Historical Statewide Election Results for Jefferson County, IA

Click on the Year to view county-level data for that election.

Year	Type	Turnout	Winner			Runner-Up			Other		Total Votes	Diff	PSV
2022	S3	52%	Charles Grassley* (R)	3,263	50.3%	Michael Franken (D)	3,214	49.5%	12 [+]	0.2%	6,489	-6	0.53%
[-] Other candidates in 2022: Other (Write-in) 12 (0.2%);
2022	G	53%	Kim Reynolds* (R)	3,449	51.8%	Deidre DeJear (D)	3,086	46.3%	125 [+]	1.9%	6,660	-6	0.55%
[-] Other candidates in 2022: Rick Stewart (Libertarian) 122 (1.8%); Other (Write-in) 3 (0.0%);
2020	S2	71%	Theresa Greenfield (D)	4,547	51.6%	Joni Ernst* (R)	4,008	45.5%	253 [+]	2.9%	8,808	-6	0.53%
[-] Other candidates in 2020: Rick Stewart (Libertarian) 163 (1.9%); Suzanne Herzog (I) 80 (0.9%); Other (Write-in) 10 (0.1%);

2018	G	54%	Fred Hubbell (D)	3,750	53.0%	Kim Reynolds* (R)	3,146	44.5%	180 [+]	2.5%	7,076	-6	0.53%
[-] Other candidates in 2018: Jake Porter (Libertarian) 129 (1.8%); Gary Siegwarth (Clean Water) 46 (0.7%); Other (Write-in) 5 (0.1%);
2016	S3	60%	Charles Grassley* (R)	4,094	51.6%	Patty Judge (D)	3,447	43.4%	395 [+]	5.0%	7,936	-9	0.51%
[-] Other candidates in 2016: Charles Aldrich (Libertarian) 271 (3.4%); Jim Hennager (New Independent) 74 (0.9%); Michael Luick-Thrams (I) 31 (0.4%); Other (Write-in) 19 (0.2%);
2014	S2	47%	Bruce Braley (D)	3,237	51.4%	Joni Ernst (R)	2,761	43.8%	304 [+]	4.8%	6,302	-8	0.56%
[-] Other candidates in 2014: Rick Stewart (I) 141 (2.2%); Douglas Butzier (Libertarian) 92 (1.5%); Ruth Smith (I) 44 (0.7%); Bob Quast (I) 19 (0.3%); Other (Write-in) 8 (0.1%);
2014	G	47%	Terry Branstad* (R)	3,169	50.1%	Jack Hatch (D)	2,856	45.2%	296 [+]	4.7%	6,321	-9	0.56%
[-] Other candidates in 2014: Lee Hieb (Libertarian) 165 (2.6%); Jim Hennager (New Independent) 67 (1.1%); Jonathan Narcisse (Iowa) 55 (0.9%); Other (Write-in) 9 (0.1%);
2010	S3	48%	Charles Grassley* (R)	3,429	51.5%	Roxanne Conlin (D)	2,987	44.9%	242 [+]	3.6%	6,658	-13	0.60%
[-] Other candidates in 2010: John Heiderscheit (Libertarian) 233 (3.5%); Other (Write-in) 9 (0.1%);
2010	G	49%	Chet Culver* (D)	3,412	50.7%	Terry Branstad (R)	2,949	43.8%	368 [+]	5.5%	6,729	-9	0.60%
[-] Other candidates in 2010: Jonathan Narcisse (Iowa) 164 (2.4%); Eric Cooper (Libertarian) 127 (1.9%); Gregory Hughes (I) 32 (0.5%); Other (Write-in) 30 (0.4%); David Rosenfeld (Socialist Workers) 15 (0.2%);

2008	S2	62%	Tom Harkin* (D)	5,690	67.7%	Christopher Reed (R)	2,700	32.1%	10 [+]	0.1%	8,400	-5	0.56%
[-] Other candidates in 2008: Other (Write-in) 10 (0.1%);
2006	G	46%	Chet Culver (D)	3,418	56.4%	Jim Nussle (R)	2,350	38.7%	297 [+]	4.9%	6,065	-6	0.58%
[-] Other candidates in 2006: Wendy Barth (Green) 229 (3.8%); Kevin Litten (Libertarian) 52 (0.9%); Diana Newberry (Socialist Workers) 13 (0.2%); Other (Write-in) 3 (0.0%);
2004	S3	63%	Charles Grassley* (R)	4,979	61.6%	Arthur Small (D)	2,598	32.1%	505 [+]	6.2%	8,082	-9	0.55%
[-] Other candidates in 2004: Christy Ann Welty (Libertarian) 251 (3.1%); Daryl Northrop (Green) 237 (2.9%); Edwin Fruit (Socialist Workers) 15 (0.2%); Other (Write-in) 2 (0.0%);
2002	S2	47%	Tom Harkin* (D)	3,119	52.8%	Greg Ganske (R)	2,414	40.9%	373 [+]	6.3%	5,906	-3	0.58%
[-] Other candidates in 2002: Richard Moore (Libertarian) 205 (3.5%); Timothy Harthan (Green) 164 (2.8%); Other (Write-in) 4 (0.1%);
2002	G	48%	Doug Gross (R)	2,571	43.0%	Tom Vilsack* (D)	2,324	38.9%	1,086 [+]	18.2%	5,981	-2	0.58%
[-] Other candidates in 2002: Clyde Cleveland (Libertarian) 955 (16.0%); Jay Robinson (Green) 128 (2.1%); Other (Write-in) 3 (0.1%);

1998	S3	52%	Charles Grassley* (R)	3,763	59.0%	David Osterberg (D)	1,354	21.2%	1,256 [+]	19.7%	6,373	-9	0.67%
[-] Other candidates in 1998: Susan Marcus (Natural Law) 1,234 (19.4%); Margaret Trowe (Socialist Workers) 13 (0.2%); Other (Write-in) 9 (0.1%);
1998	G	52%	Tom Vilsack (D)	3,160	49.4%	Jim Ross Lightfoot (R)	2,633	41.1%	609 [+]	9.5%	6,402	-5	0.67%
[-] Other candidates in 1998: Jim Schaefer (Natural Law) 553 (8.6%); Jim Hennager (Reform) 31 (0.5%); Mark Kennis (I) 19 (0.3%); Other (Write-in) 6 (0.1%);
1996	S2	60%	Tom Harkin* (D)	2,880	39.3%	Jim Ross Lightfoot (R)	2,841	38.8%	1,603 [+]	21.9%	7,324	-8	0.60%
[-] Other candidates in 1996: Fred Gratzon (Natural Law) 1,510 (20.6%); Sue Atkinson (I) 71 (1.0%); Shirley Pena (Socialist Workers) 10 (0.1%); Other (Write-in) 7 (0.1%); Joe Sulentic (I) 5 (0.1%);
1994	G	46%	Terry Branstad* (R)	3,096	54.5%	Bonnie Campbell (D)	1,422	25.1%	1,158 [+]	20.4%	5,676	-2	0.57%
[-] Other candidates in 1994: Veronica Butler (Natural Law) 1,081 (19.0%); Richard Hughes (I) 30 (0.5%); Other (Write-in) 30 (0.5%); Carl Olson (Libertarian) 16 (0.3%); Michael Galati (Socialist Workers) 1 (0.0%);
1992	S3	69%	Charles Grassley* (R)	4,404	52.3%	Stuart Zimmerman (Natural Law)	2,453	29.1%	1,559 [+]	18.5%	8,416	-17	0.65%
[-] Other candidates in 1992: Jean Lloyd-Jones (D) 1,464 (17.4%); Roseanne Freeburg (I) 30 (0.4%); Sue Atkinson (I) 30 (0.4%); Mel Boring (I) 18 (0.2%); Carl Olsen (Green) 7 (0.1%); Richard Hughes (I) 5 (0.1%); Cleve Pulley (Socialist Workers) 5 (0.1%);
1990	S2	46%	Tom Harkin* (D)	2,962	52.5%	Tom Tauke (R)	2,682	47.5%	3 [+]	0.1%	5,647	1	0.57%
[-] Other candidates in 1990: Other (Write-in) 3 (0.1%);
1990	G	46%	Terry Branstad* (R)	3,728	65.3%	Donald Avenson (D)	1,928	33.8%	52 [+]	0.9%	5,708	5	0.58%
[-] Other candidates in 1990: Nan Bailey (Socialist Workers) 41 (0.7%); Other (Write-in) 11 (0.2%);

1986	S3	34%	Charles Grassley* (R)	2,964	70.3%	John Roehrick (D)	1,247	29.6%	8 [+]	0.2%	4,219	4	0.47%
[-] Other candidates in 1986: John Masters (I) 6 (0.1%); Other (Write-in) 2 (0.0%);
1986	G	35%	Terry Branstad* (R)	2,547	59.6%	Lowell Junkins (D)	1,726	40.4%	3 [+]	0.1%	4,276	8	0.47%
[-] Other candidates in 1986: Other (Write-in) 3 (0.1%);
1984	S2	59%	Tom Harkin (D)	3,726	51.3%	Roger Jepsen* (R)	3,515	48.4%	22 [+]	0.3%	7,263	5	0.56%
[-] Other candidates in 1984: Gary DeYoung (I) 19 (0.3%); Other (Write-in) 3 (0.0%);
1982	G	43%	Terry Branstad (R)	3,109	58.7%	Roxanne Conlin (D)	2,151	40.6%	38 [+]	0.7%	5,298	6	0.51%
[-] Other candidates in 1982: Marcia Farrington (Libertarian) 13 (0.2%); Other (Write-in) 13 (0.2%); Jim Bittner (Socialist) 12 (0.2%);
1980	S3	57%	Charles Grassley (R)	4,200	59.8%	John Culver* (D)	2,743	39.1%	75 [+]	1.1%	7,018	6	0.55%
[-] Other candidates in 1980: Robert Hengerer (Libertarian) 53 (0.8%); Gary DeYoung (I) 17 (0.2%); John Henderson (I) 5 (0.1%);

1978	S2	36%	Roger Jepsen (R)	2,489	59.7%	Dick Clark* (D)	1,660	39.8%	20 [+]	0.5%	4,169	9	0.51%
[-] Other candidates in 1978: Gerald Baker (I) 11 (0.3%); Ben Olson (Libertarian) 9 (0.2%);
1978	G	37%	Robert Ray* (R)	2,840	66.4%	Jerry Fitzgerald (D)	1,418	33.2%	17 [+]	0.4%	4,275	8	0.51%
[-] Other candidates in 1978: John Ball (Libertarian) 15 (0.4%); Joseph Grant (Socialist) 2 (0.0%);
1974	S3	40%	David Stanley (R)	2,730	60.5%	John Culver (D)	1,767	39.1%	18 [+]	0.4%	4,515	13	0.51%
[-] Other candidates in 1974: Lorin Oxley (American) 18 (0.4%);
1974	G	40%	Robert Ray* (R)	3,022	66.2%	James Schaben (D)	1,517	33.3%	23 [+]	0.5%	4,562	8	0.50%
[-] Other candidates in 1974: Ralph Scott (American) 23 (0.5%);
1972	S2	62%	Dick Clark (D)	3,576	51.4%	Jack Miller* (R)	3,351	48.1%	33 [+]	0.5%	6,960	4	0.58%
[-] Other candidates in 1972: William Rocap (American Independent) 32 (0.5%); Fred Benton (I) 1 (0.0%);
1972	G	62%	Robert Ray* (R)	4,506	64.5%	Paul Franzenburg (D)	2,416	34.6%	68 [+]	1.0%	6,990	6	0.58%
[-] Other candidates in 1972: Robert Dilley (American Independent) 68 (1.0%);
1970	G	44%	Robert Ray* (R)	2,742	60.3%	Robert Fulton (D)	1,715	37.7%	87 [+]	1.9%	4,544	9	0.57%
[-] Other candidates in 1970: Robert Dilley (American Independent) 87 (1.9%);

1968	S3	67%	David Stanley (R)	3,964	59.0%	Harold Hughes (D)	2,752	41.0%	3 [+]	0.0%	6,719	9	0.59%
[-] Other candidates in 1968: Verne Higens (Prohibition) 3 (0.0%);
1968	G	66%	Robert Ray (R)	4,093	61.6%	Paul Franzenburg (D)	2,546	38.3%	2 [+]	0.0%	6,641	8	0.58%
[-] Other candidates in 1968: Harry Miller (Prohibition) 2 (0.0%);
1966	S2	50%	Jack Miller* (R)	3,449	69.6%	E.B. Smith (D)	1,441	29.1%	66 [+]	1.3%	4,956	9	0.58%
[-] Other candidates in 1966: Herbert Hoover (Independent American) 29 (0.6%); Robert Dilley (American Constitution) 19 (0.4%); Verne Higens (Prohibition) 10 (0.2%); Charles Day (Peace Independent) 8 (0.2%);
1966	G	50%	William Murray (R)	2,770	55.3%	Harold Hughes* (D)	2,129	42.5%	106 [+]	2.1%	5,005	11	0.56%
[-] Other candidates in 1966: Charles Sloca (Independent American) 88 (1.8%); David Quiner (American Constitution) 18 (0.4%);
1964	G	67%	Harold Hughes* (D)	4,279	64.3%	Evan Hultman (R)	2,363	35.5%	14 [+]	0.2%	6,656	4	0.57%
[-] Other candidates in 1964: Robert Dilley (Conservative) 14 (0.2%);
1962	S3	50%	Bourke Hickenlooper* (R)	3,036	60.9%	E.B. Smith (D)	1,948	39.1%	0	0.0%	4,984	8	0.62%
[-] Other candidates in 1962:
1962	G	49%	Norman Erbe* (R)	2,749	56.3%	Harold Hughes (D)	2,133	43.7%	0	0.0%	4,882	9	0.60%
[-] Other candidates in 1962:
1960	S2	74%	Jack Miller (R)	4,393	59.7%	Herschel Loveless (D)	2,962	40.3%	0	0.0%	7,355	8	0.59%
[-] Other candidates in 1960:
1960	G	73%	Norman Erbe (R)	4,334	59.2%	Edward McManus (D)	2,989	40.8%	0	0.0%	7,323	7	0.59%
[-] Other candidates in 1960:

*: incumbent +: ran on additional party lines Type: G: Governor; S1,S2,S3: Senate Class 1, 2 or 3
italics: special election RO: runoff election PSV: percent of state vote

Historical U.S. House Election Results for Jefferson County, IA

Click on the District to view county-level data for that election (where available).

2022 Census data
White:	13,109	83.51%	9.8%
Black:	380	2.42%	91.0%
Indian:	50	0.32%	78.6%
Asian:	1,241	7.91%	12.7%
2+ races:	322	2.05%	43.8%
Hispanic:	596	3.80%	45.4%

Total non-White:	2,589	16.49%	12.4%

Change in White population:	-1,430	-8.5
Change in Non-White pop.:	285	1.7

Date	District	Winner			Runner-Up			Other		Total Votes
2022-11-08	IA01	Mariannette Miller-Meeks* (R)	3,274	50.5%	Christina Bohannan (D)	3,204	49.4%	7	0.1%	6,485
County Total for 2022-11-08:										6,485

2020-11-03	IA02	Rita Hart (D)	4,374	50.8%	Mariannette Miller-Meeks (R)	4,226	49.0%	17	0.2%	8,617
County Total for 2020-11-03:										8,617

2018-11-06	IA02	Dave Loebsack* (D)	4,201	59.8%	Christopher Peters (R)	2,644	37.6%	178	2.5%	7,023
County Total for 2018-11-06:										7,023

2016-11-08	IA02	Dave Loebsack* (D)	4,572	58.7%	Christopher Peters (R)	3,194	41.0%	18	0.2%	7,784
County Total for 2016-11-08:										7,784

2014-11-04	IA02	Dave Loebsack* (D)	3,527	56.3%	Mariannette Miller-Meeks (R)	2,717	43.4%	19	0.3%	6,263
County Total for 2014-11-04:										6,263

2012-11-06	IA02	Dave Loebsack* (D)	4,784	58.4%	John Archer (R)	3,281	40.1%	127	1.6%	8,192
County Total for 2012-11-06:										8,192

2010-11-02	IA02	Dave Loebsack* (D)	3,397	51.0%	Mariannette Miller-Meeks (R)	3,066	46.0%	198	3.0%	6,661
County Total for 2010-11-02:										6,661

2008-11-04	IA02	Dave Loebsack* (D)	4,121	49.6%	Mariannette Miller-Meeks (R)	3,801	45.8%	384	4.6%	8,306
County Total for 2008-11-04:										8,306

2006-11-07	IA02	Jim Leach* (R)	3,165	54.5%	Dave Loebsack (D)	2,644	45.5%	2	0.0%	5,811
County Total for 2006-11-07:										5,811

2004-11-02	IA02	Jim Leach* (R)	4,843	60.8%	Dave Franker (D)	2,891	36.3%	234	2.9%	7,968
County Total for 2004-11-02:										7,968

2002-11-05	IA02	Jim Leach* (R)	3,396	57.6%	Julie Thomas (D)	2,274	38.5%	230	3.9%	5,900
County Total for 2002-11-05:										5,900

2000-11-07	IA03	Leonard Boswell* (D)	3,632	49.3%	Jay Marcus (R)	3,261	44.2%	477	6.5%	7,370
County Total for 2000-11-07:										7,370

1998-11-03	IA03	Leonard Boswell* (D)	2,707	44.0%	Larry McKibben (R)	2,674	43.5%	767	12.5%	6,148
County Total for 1998-11-03:										6,148

1996-11-05	IA03	Mike Mahaffey (R)	3,034	42.1%	Leonard Boswell (D)	2,006	27.9%	2,161	30.0%	7,201
County Total for 1996-11-05:										7,201

1994-11-08	IA03	Jim Ross Lightfoot* (R)	3,094	58.8%	Elaine Baxter (D)	2,065	39.3%	101	1.9%	5,260
County Total for 1994-11-08:										5,260

1992-11-03	IA03	Jim Ross Lightfoot* (R)	3,236	38.7%	Elaine Baxter (D)	2,616	31.3%	2,513	30.0%	8,365
County Total for 1992-11-03:										8,365

Year	Total	Republican		Democrat		Other		R/D Edge	R/D Edge %	VAPOP %
2023	7,740	2,920	37.7%	3,048	39.4%	1,772	22.9%	Dem +128	Dem +1.7%	62%
2022	9,739	3,486	35.8%	3,832	39.3%	2,421	24.9%	Dem +346	Dem +3.6%	78%
2020	10,967	3,569	32.5%	4,542	41.4%	2,856	26.0%	Dem +973	Dem +8.9%	88%
2018	10,435	3,208	30.7%	4,211	40.4%	3,016	28.9%	Dem +1,003	Dem +9.6%	82%
2016	10,494	3,369	32.1%	3,997	38.1%	3,128	29.8%	Dem +628	Dem +6.0%	81%
2014	10,295	3,437	33.4%	3,441	33.4%	3,417	33.2%	Dem +4	Dem +0.0%	78%
2012	10,424	3,600	34.5%	3,380	32.4%	3,444	33.0%	Rep +220	Rep +2.1%	77%
2010	11,709	3,810	32.5%	3,717	31.7%	4,182	35.7%	Rep +93	Rep +0.8%	85%
2008	12,529	3,696	29.5%	4,155	33.2%	4,678	37.3%	Dem +459	Dem +3.7%	93%
2006	11,946	3,894	32.6%	3,035	25.4%	5,017	42.0%	Rep +859	Rep +7.2%	91%
2004	12,265	4,314	35.2%	2,909	23.7%	5,042	41.1%	Rep +1,405	Rep +11.5%	96%
2002	11,571	4,976	43.0%	1,944	16.8%	4,651	40.2%	Rep +3,032	Rep +26.2%	92%
2000	11,421	5,419	47.4%	1,895	16.6%	4,107	36.0%	Rep +3,524	Rep +30.9%	94%
1994	10,181	3,487	34.3%	2,432	23.9%	4,262	41.9%	Rep +1,055	Rep +10.4%	83%
1986	9,060	3,395	37.5%	2,622	28.9%	3,043	33.6%	Rep +773	Rep +8.5%	74%

Jefferson County, IA

Historical Presidential Election Results for Jefferson County, IA

Historical Statewide Election Results for Jefferson County, IA

Historical U.S. House Election Results for Jefferson County, IA

Voter Registration Data for Jefferson County, IA