Kleberg was first elected in 1931 in a special election to succeed the late Harry M. Wurzbach.[4] His election caused the Democratic party to achieve a majority in the House of Representatives, which it retained for all but four of the next sixty-three years. He was elected unopposed in 1940 and 1942. Lyndon B. Johnson served as a congressional secretary under Kleberg from 1931 until his appointment as head of the Texas National Youth Administration in 1935.[5][6]
As described by Johnson biographer Robert Caro, Kleberg was a staunch conservative, and initially took a dim view of President Franklin D. Roosevelt and the New Deal. Nevertheless, he was persuaded by Lyndon Johnson to vote for certain key New Deal policies that he personally opposed when it was brought to his attention that they enjoyed significant support among his constituents.
^Stout, David (November 16, 2001). "Ex-Rep. Bob Eckhardt, 88, Liberal Democrat of Texas". New York Times. Retrieved 2013-02-04. And Mr. Eckhardt's second cousin Representative Richard M. Kleberg of Texas gave the young Lyndon B. Johnson his first job in Washington.
^"A Texas Boy 'Born Into Politics'". The New York Times on the Web. January 23, 1973. Retrieved 2013-02-04. While still teaching in Houston, Mr. Johnson went to work as a volunteer in the 1931 congressional campaign of Richard M. Kleberg Sr., one of the owners of the mammoth King Ranch and a friend of his father. Mr. Kleberg won the special election for a House seat. The tall, gangling Mr. Johnson, then 22, went to Washington with him as his legislative assistant. Lyndon Johnson hit Capitol Hill in those Depression days like a Texas tornado. He called persistently Federal bureaus, seeking drought relief, unemployment relief, civil service jobs, anything that was available for the folks back home.