Lyndon Johnson was.
In 1937, Johnson successfully contested a special election for Texas’s 10th congressional district, that covered Austin and the surrounding hill country. About the book: https://www.amazon.com/gp/product/067…
He ran on a New Deal platform and was effectively aided by his wife. He served in the House from April 10, 1937, to January 3, 1949.
President Franklin D. Roosevelt found Johnson to be a welcome ally and conduit for information, particularly with regard to issues concerning internal politics in Texas (Operation Texas) and the machinations of Vice President John Nance Garner and Speaker of the House Sam Rayburn. Johnson was immediately appointed to the Naval Affairs Committee. He worked for rural electrification and other improvements for his district. Johnson steered the projects towards contractors that he personally knew, such as the Brown Brothers, Herman and George, who would finance much of Johnson’s future career. In 1941, he ran for the U.S. Senate in a special election against the sitting Governor of Texas, radio personality W. Lee “Pappy” O’Daniel. Johnson lost the election.
In the 1948 elections, Johnson again ran for the Senate and won. This election was highly controversial: in a three-way Democratic Party primary Johnson faced a well-known former governor, Coke Stevenson, and a third candidate. Johnson drew crowds to fairgrounds with his rented helicopter dubbed “The Johnson City Windmill”. He raised money to flood the state with campaign circulars and won over conservatives by voting for the Taft-Hartley act (curbing union power) as well as by criticizing unions.
Stevenson came in first but lacked a majority, so a runoff was held. Johnson campaigned even harder this time around, while Stevenson’s efforts were surprisingly poor. The runoff count took a week. The Democratic State Central Committee (not the State of Texas, because the matter was a party primary) handled the count, and it finally announced that Johnson had won by 87 votes. By a majority of one member (29–28) the committee voted to certify Johnson’s nomination, with the last vote cast on Johnson’s behalf by Temple, Texas, publisher Frank W. Mayborn, who rushed back to Texas from a business trip in Nashville, Tennessee. There were many allegations of fraud on both sides. Thus one writer alleges that Johnson’s campaign manager, future Texas governor John B. Connally, was connected with 202 ballots in Precinct 13 in Jim Wells County that had curiously been cast in alphabetical order and just at the close of polling. Some of these voters swore that they had not voted that day. Robert Caro argued in his 1989 book that Johnson had stolen the election in Jim Wells County and other counties in South Texas, as well as rigging 10,000 ballots in Bexar County alone. An election judge, Luis Salas, said in 1977, that he had certified 202 fraudulent ballots for Johnson.
The state Democratic convention upheld Johnson. Stevenson went to court, but—with timely help from his friend Abe Fortas—Johnson prevailed. Johnson was elected senator in November and went to Washington tagged with the ironic label “Landslide Lyndon,” which he often used deprecatingly to refer to himself.