India, Jan. 12 -- Samajwadi Party (SP) chief Akhilesh Yadav all but announced an alliance with one-time arch-rival Bahujan Samaj Party (BSP) for the Lok Sabha polls on Friday, saying the coalition will get "the math right" and defeat the Bharatiya Janata Party (BJP).

A formal announcement is expected at a press conference by Yadav and BSP chief Mayawati in Lucknow on Saturday. "As of now, the alliance is only between two parties. The role of any other party will be decided later," Akhilesh said in an event organised by Twitter in Kannauj.

The former Uttar Pradesh chief minister said the BJP had strengthened because it joined hands with regional parties, and that his party was also gaining strength by forming a coalition.

"Our [BSP and ...