==U.S. House of Representatives==
Following the death of incumbent popular congressman [[J. Will Taylor|James Willis "J. Will" Taylor, Jr.]] in 1939, Jennings was among several Republican contenders for the seat, which included Taylor's older daughter Elizabeth.<ref>Hill, Ray (September 3, 2018). [https://knoxfocus.com/archives/this-weeks-focus/mystery-j-will-taylors-death-ii/ The Mystery After J. Will Taylor’s Death, II]. ''The Knoxville Focus''. Retrieved August 5, 2021.</ref> However, Elizabeth Taylor ultimately decided against running for her late father's seat, citing her mother's ill health.
Jennings voted for the 1940 Gavagan-Fish<ref>FascinatingPolitics (July 1, 2018). [https://fascinatingpolitics.com/2018/07/01/on-ideology-and-anti-lynching-legislation/ On Ideology and Anti-Lynching Legislation]. ''Mad Politics: The Bizarre, Fascinating, and Unknown of American Political History''. Retrieved August 5, 2021.</ref> [[anti-lynching bill]].<ref>[https://www.govtrack.us/congress/votes/76-3/h96 TO PASS H.R. 801, A BILL TO MAKE LYNCHING A FEDERAL CRIME.]. ''GovTrack.us''. Retrieved August 5, 2021.</ref>