Left's support base suffered a two-way communal split in the 2019 elections in West Bengal

While Hindu voters left the Left for the BJP, Muslims consolidated behind the AITC

chart shows community-wise support for different parties in 2014 and 2019 Lok Sabha elections in West Bengal
Chart: Roshan Kishore Source: National Election Study, 2019, CSDS Lokniti published in The Hindu Get the data