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Election 1970 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

1970 Senate election results by state and county

Democrats won 23 of the 33 Senate seats up in Nixon's first midterm, but Republicans made a small net gain, taking Tennessee, Ohio, Maryland and Connecticut.

33 Senate races were held in 1970, plus 2 special elections. Democrats won 21 and Republicans 10, and 2 went to neither party.

The closest were Indiana (D+0.3), New York (D+2.0) and Ohio (R+2.2). 7 seats changed party: California to the Democrats, Connecticut to the Republicans, Maryland to the Republicans, New York to the third party, Ohio to the Republicans, Tennessee to the Republicans and Virginia to the third party.

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Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

About the 1970 Senate elections

Nixon and Vice President Spiro Agnew campaigned hard in 1970 on law and order, with the Vietnam War and campus protests still dominant. Republicans gained seats in Connecticut, Maryland, Ohio and Tennessee, while Democrats gained California. Democrats kept their majority. In Tennessee, Bill Brock beat Albert Gore Sr., who had opposed the war and voted against Nixon's Supreme Court nominees. In Ohio, Robert Taft Jr. beat Howard Metzenbaum by 2.2 points, and in Maryland J. Glenn Beall Jr. unseated Joseph Tydings. In California, John Tunney beat George Murphy. In New York, James Buckley, running on the Conservative Party line, won a three-way race. In Texas, Lloyd Bentsen, who had beaten Ralph Yarborough in the Democratic primary, beat Congressman George H.W. Bush by 7.1 points. Bush became ambassador to the United Nations instead. Indiana's Vance Hartke held his seat by 0.3 points, and Stuart Symington beat John Danforth in Missouri.

Every race

StateDemocratVotesRepublicanVotesOthersMargin
Alaska (special) Wendell P. Kay32,456 (40.4%) Ted Stevens47,908 (59.6%) R+19.2
Arizona Sam Grossman179,512 (44.0%) Paul Fannin228,284 (56.0%) R+12.0
California flip John V. Tunney3,496,558 (53.9%) George Murphy2,877,617 (44.3%) 117,982 D+9.5
Connecticut flip Joseph Duffey368,111 (33.8%) Lowell Weicker454,721 (41.7%) Thomas J. Dodd (Independent) 266,497 (24.5%)
R+8.0
Delaware Jacob W. Zimmerman64,740 (40.1%) William Roth94,979 (58.8%) 1,720 R+18.7
Florida Lawton Chiles902,438 (53.9%) William C. Cramer772,817 (46.1%) 123 D+7.7
Hawaii Cecil Heftel116,597 (48.4%) Hiram L. Fong124,163 (51.6%) R+3.1
Illinois (special) Adlai Stevenson III2,065,054 (57.4%) Ralph T. Smith1,519,718 (42.2%) 14,500 D+15.2
Indiana R. Vance Hartke870,990 (50.1%) Richard L. Roudebush866,707 (49.9%) D+0.3
Maine Ed Muskie199,954 (61.7%) Neil S. Bishop123,906 (38.3%) D+23.5
Maryland flip Joseph D. Tydings460,422 (48.1%) J. Glenn Beall Jr.484,960 (50.7%) 10,988 R+2.6
Massachusetts Ted Kennedy1,202,856 (62.1%) Josiah A. Spaulding715,978 (37.0%) 16,773 D+25.2
Michigan Philip A. Hart1,744,672 (66.8%) Lenore Romney858,438 (32.9%) 7,653 D+34.0
Minnesota Hubert Humphrey788,256 (57.8%) Clark MacGregor568,025 (41.6%) 8,606 D+16.1
Mississippi John C. Stennis286,622 (88.4%) none William Richard Thompson (Independent) 37,593 (11.6%)
D+88.4
Missouri Stuart Symington655,431 (51.0%) John C. Danforth617,903 (48.1%) 10,578 D+2.9
Montana Mike Mansfield150,060 (60.5%) Harold E. Wallace97,809 (39.5%) D+21.1
Nebraska Frank B. Morrison217,681 (47.4%) Roman Hruska240,894 (52.5%) 391 R+5.1
Nevada Howard Cannon85,187 (57.6%) William Raggio60,838 (41.2%) 1,743 D+16.5
New Jersey Harrison Williams Jr.1,157,074 (54.0%) Nelson G. Gross903,026 (42.2%) 82,005 D+11.9
New Mexico Joseph Montoya151,486 (52.3%) Anderson Carter135,004 (46.6%) 3,416 D+5.7
New York flip Richard Ottinger2,171,232 (36.8%) Charles Goodell1,434,472 (24.3%) James L. Buckley (Conservative) 2,288,190 (38.8%)
Ind. +2.0
North Dakota Quentin Burdick134,519 (61.3%) Thomas S. Kleppe82,996 (37.8%) 2,045 D+23.5
Ohio flip Howard Metzenbaum1,495,262 (47.4%) Robert A. Taft Jr.1,565,682 (49.7%) 90,330 R+2.2
Pennsylvania William G. Sesler1,653,774 (45.4%) Hugh Scott1,874,106 (51.4%) 116,425 R+6.1
Rhode Island John O. Pastore230,469 (67.5%) John McLaughlin107,351 (31.5%) 3,402 D+36.1
Tennessee flip Al Gore Sr.519,858 (47.4%) William E. Brock III562,645 (51.3%) 14,538 R+3.9
Texas Lloyd Bentsen1,194,069 (53.5%) George H.W. Bush1,035,794 (46.4%) 1,808 D+7.1
Utah Frank E. Moss210,207 (56.2%) Laurence J. Burton159,004 (42.5%) 5,092 D+13.7
Vermont Philip H. Hoff62,271 (40.2%) Winston L. Prouty91,198 (58.9%) 1,430 R+18.7
Virginia flip George C. Rawlings Jr.294,582 (31.2%) Ray L. Garland144,765 (15.3%) Harry F. Byrd Jr. (Independent) 506,237 (53.5%)
Ind. +22.4
Washington Scoop Jackson879,385 (82.4%) Charles W. Elicker170,790 (16.0%) 16,632 D+66.4
West Virginia Robert C. Byrd345,965 (77.6%) Elmer H. Dodson99,658 (22.4%) D+55.3
Wisconsin William Proxmire948,445 (70.8%) John E. Erickson381,297 (28.5%) 9,225 D+42.4
Wyoming Gale McGee67,207 (55.8%) John S. Wold53,279 (44.2%) D+11.6

Margin: the Democrat's share of all votes minus the Republican's. Margins are Democrat minus Republican, of all votes. Certified results, from the states' own archives, the MIT Election Data and Science Lab, Heideman (2026) and Algara & Amlani (2021). By county: "As they were" draws each county as it stood on election day; "Today's" shares the old votes among today's counties by area. County boundaries: Newberry Library, Atlas of Historical County Boundaries (CC BY-NC-SA 2.5). How these results were checked.

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