1950	0.95	THE ABOVE FIGURE FOR THE COHESIVENESS OF THE RADICAL PARLIAMENTARY GROUP IS AN APPROXIMATION. ALTHOUGH THE LITERATURE DECLARES THE PARTY TO BE HIGHLY COHESIVE (AND EXPLAINS THE INSTANCES WHERE IT MAY NOT BE), FEW AUTHORS PROVIDE QUANTITATIVE DATA. HOWEVER, OUT OF 1,049 DIVISIONS BETWEEN 1953-1963 THERE WERE ONLY 32 INSTANCES WHERE ONE OR TWO MEMBERS (OUT OF AN AVERAGE 12 TO 13) VOTED AGAINST THE PARTY AND ONLY ONE INSTANCE WHEN MORE THAN TWO MEMBERS VOTED AGAINST THE PARTY. ROLL CALL VOTES ARE RARE.
1951	0.95
1952	0.95
1953	0.95
1954	0.95
1955	0.95
1956	0.95
1957	0.95
1958	0.95
1959	0.95
1960	0.95
1961	0.95
1962	0.95
1963	0.95
1964	0.95
1965	0.95
1966	0.95
1967	0.95	1967 vote on EEC membership - all RV's present voted for membership (Fitzmaurice, 1981, 151 - Patti Goff)
1968	0.95
1969	0.95
1970	0.95	1970 vote on EEC membership - all RV's present voted for membership (Fitzmaurice, 1981, 151 - Patti Goff)
1971	0.95	Two votes on EEC membership in 1971 - first vote, 1 RV abstains, all others present vote for membership (Fitzmaurice, 1981, 151) - second vote, 4 RV's vote against membership, all other RV's present vote for membership (Fitzmaurice, 1981, 151 -Patti Goff)
1972	0.93	1972 vote on EEC membership - 4 RV's vote against membership, all other RV's present vote for membership (Fitzmaurice, 1981, 151 - Patti Goff)
1973	0.93
1974	0.93
1975	0.93
1976	0.95
1977	0.95
1978	0.95
1979	0.95
1980	0.95
1981	0.95
1982	0.95
1983	0.95
1984	0.95
1985	0.95
1986	0.95
1987	0.95
1988	0.95
1989	0.95
1990	0.95