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Senate roll call 456 · 88th Congress · Jul 24, 1964

S.RES.338. Cooper subsstitute amend. To establish a six-member bipartisan select Senate comm. To investigate unethical or illegal conduct by a senator or emplo

On Jul 24, 1964, the Senate voted 50–33 (SRE 338). Result: passed. By party: Democrats 27–32, Republicans 28–2. It was a split vote: the parties took opposite sides, with some members crossing over. 29 members voted against their own party.

During the 88th Congress (1963–1964), Lyndon B. Johnson was president, and Democrats held majorities in both the House and Senate.

Yes
50
No
33
Did not vote
3
Date
Jul 24, 1964

By party

  • Democrats27 yes · 32 no · 3 didn’t vote
  • Republicans28 yes · 2 no

Who broke with their party

How each senator voted: Yes

How each senator voted: No

Voted present

Did not vote

Other votes

From Voteview roll call records.

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Capitol Receipts, “S.RES.338. Cooper subsstitute amend. To…: Senate Vote, Jul 24, 1964,” https://www.capitolreceipts.com/vote/88-S-456/s-res-338-cooper-subsstitute-amend-to-establish-a (accessed 2026-10-17).