Very simple. all those "kamchors' AND Criminal elements in WB,Kerala support Communists just because they can get away without being pinished for their crimes if they are the supporters of Communists. also, once you are a supporter of communist parties and if you change your party loyalty for whatever reason, Communist goondas ( they are widespread across WB and Kerala) will see that you are eliminated physically. They terrorise people to ensure loyalty to the party. if Elections are held freely and fairly like rest of the country, the communists will never come to power even in WB and Kerala.Election Officers are threatened to ensure that poll rigging happens systematically.