सोनाब बेंगलनि राजखानथियाव अब्ला गेदेर सोलाय फैदोंमोन जेब्ला 1977 मायथाइनि बिधानसभा बिसायख'थियाव आगसि हान्जाया देरहाना भारतनि हायुङारि कंग्रेसखौ फेजेनदोंमोन।
West Bengal politics underwent a major change when the Left Front won the 1977 assembly election, defeating the incumbent Indian National Congress.