To pass a resolution of ratification of a convention on the international hydrographic organization. (ex. 0, 90th cong., 1st session).

On May 13, 1968, the Senate voted 73–0. Result: passed. By party: Democrats 62–0, Republicans 35–0. It was a bipartisan vote: majorities of both parties voted yes.

During the 90th Congress (1967–1968), Lyndon B. Johnson was president, and Democrats held majorities in both the House and Senate.

Yes: 73
No: 0
Did not vote: 4
Date: May 13, 1968

By party

Democrats62 yes · 0 no · 2 didn’t vote
Republicans35 yes · 0 no · 2 didn’t vote

Who broke with their party

Every member who voted sided with their party's majority.

How each senator voted: Yes

Did not vote

Other votes

From Voteview roll call records.

Cite or embed this page

Capitol Receipts, “To pass a resolution of ratification of a…: Senate Vote, May 13, 1968,” https://www.capitolreceipts.com/vote/90-S-409/to-pass-a-resolution-of-ratification-of-a-convention (accessed 2026-10-17).