[['district', 'incumbent', 'party', 'first elected', 'result', 'candidates'], ['tennessee 1', 'jimmy quillen', 'republican', '1962', 're - elected', 'jimmy quillen (r) 71.7% arthur bright (d) 28.3%'], ['tennessee 3', 'bill brock', 'republican', '1962', 're - elected', 'bill brock (r) 54.6% robert m summitt (d) 45.4%'], ['tennessee 4', 'joe l evins', 'democratic', '1946', 're - elected', 'joe l evins (d) unopposed'], ['tennessee 5', 'richard fulton', 'democratic', '1946', 're - elected', 'richard fulton (d) 59.8% bill r wills (r) 40.2%'], ['tennessee 6', 'ross bass', 'democratic', '1954', 'retired to run for u s senate democratic hold', 'william anderson (d) 78.2% cecil r hill (r) 21.8%']]
Ross Bass was the only Candidate to retire for a Senate Run
[ENT] was the only [ENT] to retire for a [ENT]