DMK responds to Annamalai's barb, claims BJP expenses low due to lack of workers. TRB Rajaa, DMK leader, asserts focus on main opposition AIADMK. Lok Sabha polling in Tamil Nadu on April 19. Rajaa vows massive win in Coimbatore. BJP's Annamalai says no money spent, Rajaa counters. DMK candidate faces AIADMK, BJP, and NTK in upcoming election.