Dakua was active in the students movement 1948–1950. As a lawyer, he practised law in Mathabhanga Court. He stood as the CPI candidate in the 1963 by-election for the
Cooch Behar parliamentary seat, finishing in fourth place with 17,760 votes (7.83%). Dakua was elected to the West Bengal Legislative Assembly in the
1967 election, standing as a CPI(M) candidate and winning the Mathabhanga seat with 26,872 votes (64.26%). Dakua lost the Mathabhanga seat in the
1969 West Bengal Legislative Assembly election, finishing in second place with 22,478 votes (48.52%). He contested the Mathabhanga seat in the
1971 election, finishing in second place with 18,386 votes (38.89%). He again finished in second place in the
1972 election, obtaining 18,173 votes (39.80%). He returned to the West Bengal Legislative Assembly following the
1977 West Bengal Legislative Assembly election, winning the Mathabhanga seat as the CPI(M) candidate. ==Minister==