In 1937, Johnson won election to a vacant congressional seat, and he was consistently reelected through 1946. Despite Roosevelt's support, however, he was defeated in a special election to the Senate in 1941. He served (1941–42) in the navy.
In 1948, Johnson was elected U.S. Senator from Texas after winning the Democratic primary by a mere 87 votes. A strong advocate of military preparedness, he persuaded the Armed Services Committee to set up (1950) the Preparedness Investigating Subcommittee, of which he became chairman. Rising rapidly in the Senate hierarchy, Johnson became (1951) Democratic whip and then (1953) floor leader. As majority leader after the 1954 elections he wielded great power, exhibiting unusual skill in marshaling support for President Eisenhower's programs. He suffered a serious heart attack in 1955 but recovered to continue his senatorial command.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.