Contesting for the first time, the TMC-backed union captured 11.65 per cent votes in the election in Eastern Railway and 5.21 per cent votes in South Eastern Railway.
It's vote share in Metro Railway was, however, 23.59 per cent.
Left-backed Eastern Railwaymen's union (ERMU) won in the Eastern Railway and Metro Railway, bagging 46.44 and 46.11 per cent votes respectively.
The Congress-backed union secured 36.11 and 27.43 per cent votes in the Eastern Railway and Metro Railway respectively.
The elections in the railway zones were held between April 25 and April 27 and results were declared yesterday.