The CPM's Buddhadeb Bhattacharya has also been on the sights of the naxals for a long time. His convoy was bombed when he had gone to Salboni to inaugrate a steel plant.
The CPI-ML are regarded as the perpetrators behind these attacks.
Image:Buddhadeb Bhattacharya, Chief Minister West Bengal addresses a party election campaign rally in Siliguri.
Photograph: Rupak De Chowdhuri/Reuters
Also see: Coverage: India Votes 2009