Cloture succeeded on 63% of votes in 1975–76, then 23%

Source. Senate.gov, Senate Action on Cloture Motions

Method and data

Method. Invoked share is cloture invoked divided by votes on cloture, by Congress, plotted at the first year of each Congress. The 119th Congress is omitted from the plot because it is incomplete; its row is in the CSV (247 of 294, 84.0%).

Congress	Years	Cloture motions filed	Votes on cloture	Cloture invoked	Invoked share (%)	Note
65	1917–1918	2	0	0
66	1919–1920	2	2	1	50
67	1921–1922	1	1	0	0
68	1923–1924	0	0	0
69	1925–1926	7	7	3	42.9
70	1927–1928	1	0	0
71	1929–1930	1	0	0
72	1931–1932	2	1	0	0
73	1933–1934	0	0	0
74	1935–1936	0	0	0
75	1937–1938	2	2	0	0
76	1939–1940	0	0	0
77	1941–1942	1	1	0	0
78	1943–1944	1	1	0	0
79	1945–1946	6	4	0	0
80	1947–1948	0	0	0
81	1949–1950	2	2	0	0
82	1951–1952	0	0	0
83	1953–1954	1	1	0	0
84	1955–1956	0	0	0
85	1957–1958	0	0	0
86	1959–1960	1	1	0	0
87	1961–1962	4	4	1	25
88	1963–1964	4	3	1	33.3
89	1965–1966	7	7	1	14.3
90	1967–1968	6	6	1	16.7
91	1969–1970	7	6	0	0
92	1971–1972	24	20	4	20
93	1973–1974	44	31	9	29
94	1975–1976	39	27	17	63
95	1977–1978	23	13	3	23.1
96	1979–1980	30	21	10	47.6
97	1981–1982	31	27	9	33.3
98	1983–1984	41	19	11	57.9
99	1985–1986	41	23	10	43.5
100	1987–1988	54	43	12	27.9
101	1989–1990	38	24	11	45.8
102	1991–1992	60	48	23	47.9
103	1993–1994	80	46	14	30.4
104	1995–1996	82	50	9	18
105	1997–1998	69	53	18	34
106	1999–2000	71	58	28	48.3
107	2001–2002	71	61	34	55.7
108	2003–2004	62	49	12	24.5
109	2005–2006	68	54	34	63
110	2007–2008	139	112	61	54.5
111	2009–2010	137	91	63	69.2
112	2011–2012	115	73	41	56.2
113	2013–2014	252	218	187	85.8
114	2015–2016	128	123	60	48.8
115	2017–2018	201	168	157	93.5
116	2019–2020	328	298	270	90.6
117	2021–2022	336	289	270	93.4
118	2023–2024	266	241	227	94.2
119	2025–2026	294	294	247	84	Congress in progress; not plotted. As printed on the Senate.gov page; its 119th Congress data file is stamped 2026-10-01.

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