Question: The 1974 United States Senate election in Oregon, was held on November 5, 1974, which Incumbent Republican U.S. Senator, from Oregon, won re-election to a second term?

Context paragraphs:
United States Senate election in Oregon, 1974: The 1974 United States Senate election in Oregon was held on November 5, 1974.  Incumbent Republican U.S. Senator Bob Packwood won re-election to a second term.  Betty Roberts was chosen to replace former U.S. Senator Wayne Morse, who won the Democratic primary but died before the general election.

United States Senate election in Maryland, 1974: The 1974 United States Senate election in Maryland was held on November 5, 1974 to elect one of Maryland's members to the United States Senate.  Incumbent Republican U.S. Senator Charles Mathias won re-election to a second term.

United States Senate election in Oklahoma, 1974: The 1974 United States Senate election in Oklahoma was held November 3, 1974.  Incumbent Republican U.S. Senator Henry Bellmon narrowly won re-election to a second term, beating Representative Ed Edmondson (D-OK) by nearly 4,000 votes.

United States Senate election in Oregon, 2008: The 2008 United States Senate election in Oregon was held on November 4, 2008.  Incumbent Republican U.S. Senator Gordon H. Smith decided to seek re-election.  Smith was the only Republican Senator from the west coast (excluding Alaska) and the only Republican holding statewide office in Oregon.  He was opposed by Democrat Jeff Merkley, the Speaker of the Oregon House of Representatives, and David Brownlow of the Constitution Party of Oregon.  Merkley won by a narrow margin, with Smith not conceding until two days after the election.  Merkley became the first Democrat to win this seat when it last went to the Republicans in 1966.

United States Senate election in New York, 1974: The 1974 United States Senate election in New York was held on November 5, 1974.  Incumbent Republican U.S. Senator Jacob K. Javits won against Democratic challenger Ramsey Clark in a three way election.

United States Senate election in Virginia, 2002: The 2002 United States Senate election in Virginia was held on November 5, 2002.  Incumbent Republican U.S. Senator John Warner won re-election to a fifth term, making him one of only three Virginia U.S. Senators to serve five or more terms.  The Democrats did not field a candidate against Warner, and he won every single county and city in the state with at least 60% of the vote.  As of 2016, this is the last Senate election in Virginia won by a Republican.

United States Senate election in Arizona, 2012: The 2012 United States Senate election in Arizona was held on November 6, 2012, alongside a presidential election, other elections to the United States Senate in other states, as well as elections to the United States House of Representatives and various state and local elections.  Incumbent Republican U.S. Senator Jon Kyl, the Senate Minority Whip, decided to retire instead of running for re-election to a fourth term.  Republican U.S. Representative Jeff Flake won the open seat.

United States Senate election in Arizona, 1974: The 1974 United States Senate election in Arizona took place on November 5, 1974.  Incumbent Republican U.S. Senator Barry Goldwater decided to run for reelection to a second consecutive term, after returning to the U.S. Senate in 1968 following his failed Presidential run in 1964 against Lyndon B. Johnson.  Goldwater defeated Democratic Party nominee philanthropist Jonathan Marshall in the general election.

United States Senate election in Oregon, 2002: The 2002 United States Senate election in Oregon was held on November 5, 2002.  Incumbent Republican United States Senator Gordon Smith ran for re-election to a second term.  Oregon Secretary of State Bill Bradbury emerged as the Democratic nominee, and though a competitive gubernatorial election occurred at the same time, Bradbury's campaign was never able to gain traction and Smith overwhelmingly won re-election.  As of 2017, this is the last Senate election in Oregon won by a Republican.

Bob Packwood: Robert William Packwood (born September 11, 1932) is a U.S. politician from Oregon and a member of the Republican Party.  He resigned from the United States Senate, under threat of expulsion, in 1995 after allegations of sexual harassment, abuse and assault of women emerged.

Supporting paragraphs: United States Senate election in Oregon, 1974 Bob Packwood
Answer: Robert William Packwood