Table:
text: United States House of Representatives elections, 1978
Texas
Texas
District Incumbent Party First_elected Result_ Candidates
Texas 12 Jim Wright Democratic 1954 Re-elected Jim Wright (D) 68.5% Claude K. Brown (R) 31.5%
Texas 14 John Andrew Young Democratic 1956 Lost renomination Democratic hold Joseph P. Wyatt, Jr. (D) 72.4% Joy Yates (R) 27.6%
Texas 16 Richard C. White Democratic 1964 Re-elected Richard C. White (D) 70.0% Michael Giere (R) 30.0%
Texas 19 George H. Mahon Democratic 1934 Retired Democratic hold Kent Hance (D) 53.2% George W. Bush (R) 46.8%
Texas 20 Henry B. Gonzalez Democratic 1961 Re-elected Henry B. Gonzalez (D) Unopposed
Texas 22 Robert Gammage Democratic 1976 Lost re-election Republican gain Ron Paul (R) 50.6% Robert Gammage (D) 49.4%

Question: Name the result when the incumbent was George H. Mahon in Texas Elections to the United States House of Representatives 1978. ?