being renumbered as Nevada 2). : Allen E. Ertel, to run for Governor of Pennsylvania, was succeeded by George Gekas. Seat eliminated in redistricting : Floyd Fithian who ran for U.S. senator. : James J. Blanchard who ran for Governor of Michigan. : Jonathan Brewster Bingham. Republicans Twenty-one Republicans retired. Eleven of those seats were held by Republicans, four were won by Democrats, and six seats were eliminated in redistricting. Republican held : John Jacob Rhodes, was succeeded by John McCain. : Pete McCloskey, to run for U.S. senator, was succeeded by Ed Zschau. : Clair Burgener, was succeeded by Ron Packard. : Louis A. Bafalis, to run for Governor of Florida, was succeeded by Tom Lewis (with district being renumbered as Florida 12). : David F. Emery, to run for U.S. senator, was succeeded by John R. McKernan Jr.. : Donald J. Mitchell, was succeeded by Sherwood Boehlert (with district being renumbered as New York 25). : Bud Brown, to run for Governor of Ohio, was succeeded by Mike DeWine. : Marc L. Marks, was succeeded by Tom Ridge (with district being renumbered as Pennsylvania 21). : Robin Beard, to run for U.S. senator, was succeeded by Don Sundquist (with district being renumbered as Tennessee 7). : James M. Collins, to run for U.S. senator, was succeeded by Steve Bartlett. : Paul S. Trible Jr., to run for U.S. senator, was succeeded by Herbert H. Bateman. Democratic gain : Bob Dornan, to run for U.S. senator, was succeeded by Mel Levine. : James Edmund Jeffries, was succeeded by Jim Slattery. : Cleve Benedict, to run for U.S. senator, was succeeded by Harley O. Staggers Jr.. : M. Caldwell Butler, was succeeded by Jim Olin. Seat eliminated in redistricting : Barry Goldwater Jr., who ran for U.S. senator. : Robert McClory. : Millicent Fenwick, who ran for U.S. senator. : Gregory W. Carman. : J. William Stanton. : Jean Spencer Ashbrook. Defeated incumbents As a result of redistricting, many incumbents were forced to compete against each other in the same district, which resulted in a larger number of incumbents being defeated in primaries. In primary elections Ten representatives lost renomination: Six lost in redistricting battles pitting incumbents against each other, and four lost nomination to non-incumbent challengers. Democrats Six Democrats lost renomination: three in redistricting races and three to a non-incumbent challenger. All the seats were held by Democrats. :