The coalition was formed by five political parties immediately before the 1970 Kerala Legislative Assembly election.
Due to internal conflicts between CPIM and CPI, this coalition broke in October 1969 and constituted a Mini Front which formed government with the external support from Indian National Congress.
[3] In the 1970 Legislative Assembly election, the United Front won majority and formed government on 4 October 1970 with C. Achutha Menon as the Chief Minister.
Although Indian National Congress was part of United Front it did not join the ministry at first, but extended support from outside.
The formal term of the government expired on 21 October 1975 but was extended on three occasions over six month periods during the Emergency.