section_path: U.S. Senate (1973–2009)
section_name: U.S. Senate (1973–2009)
paragraph_text: U.S. Senate (1973–2009)
  
  Elected to the U.S. Senate in 1972, Biden was reelected in 1978, 1984, 1990, 1996, 2002, and 2008, regularly receiving about 60% of the vote. Aged 30 when first elected, he was the seventh-youngest senator in U.S. history. He was junior senator to William Roth until Roth was defeated in 2000. He remains one of the longest-serving senators in U.S. history.
  
  Elected to the U.S. Senate in 1972, Biden was reelected in 1978, 1984, 1990, 1996, 2002, and 2008, regularly receiving about 60% of the vote. Aged 30 when first elected, he was the seventh-youngest senator in U.S. history. He was junior senator to William Roth until Roth was defeated in 2000. He remains one of the longest-serving senators in U.S. history.