D. Worth Clark

David Worth Clark (April 2, 1902 – June 19, 1955) was a Democratic U.S. representative and senator from Idaho, its first U.S. senator born in the state.

Early years Clark was born in Idaho Falls, Idaho and attended public schools there. He attended Columbia University in Portland, Oregon, and the University of Notre Dame in South Bend, Indiana, where he earned a bachelor's degree in 1922.

Senate Clark ran for the U.S. Senate in 1938 and narrowly won the Democratic primary in August over incumbent James Pope of Boise, a setback for New Deal supporters. In the general election, Clark defeated Republican former state Representative Donald Callahan of Wallace. Six years later, he was defeated for renomination in the 1944 Democratic primary by Glen H. Taylor of Pocatello.

Clark vied to reclaim his Senate seat in 1950 and defeated Taylor in the primary, as Taylor became the third consecutive incumbent of that Senate seat to lose in the Democratic primary. In the general election in November, Clark lost to Republican state Senator Herman Welker of Payette, as all four congressional seats (two House, two Senate) went to Republicans. Welker aligned himself in the Senate with the infamous Joseph McCarthy of Wisconsin and lost his re-election bid in 1956 to 32 year-old Frank Church of Boise (husband of Clark's cousin, Bethine), who served four terms.

and was buried in Holy Cross Cemetery in Culver City, California.

Personal Clark was a member of a prominent Idaho political family; his uncles Barzilla Clark and Chase Clark both served as governor of Idaho. His cousin Bethine, Chase Clark's daughter, married future U.S. Senator Frank Church in 1947.

Clark's wife Virgil (1901–1991) was a sister-in-law of Robert Smylie; the three-term (1955–1967) Republican governor of Idaho married her younger sister Lucile.