In
1960, White announced his candidacy for the
U.S. Senate seat held by
Republican Henry Dworshak, but was third of five in the Democratic primary. Runner-up Bob McLaughlin of
Mountain Home won the runoff over leader Gregg Potvin of
American Falls, but lost the general election. That seat was open again in 1962 after Dworshak's death in July, and
Gracie Pfost was the Democratic nominee, vacating her 1st district seat in the House. White won the Democratic primary and general election, the same seat his father held for eight terms. White was re-elected in the Democratic landslide of
1964, but was defeated for a third term in
1966 by Republican state senator
Jim McClure of
Payette, who defeated him again in
1968. Source: ==After Congress==