Congress leader Shashi Tharoor on Friday criticised the BJP-led Centre's proposal for 'one nation, one election', saying there is no practical way in which such a system can be implemented.

Talking to reporters on his first visit to his Lok Sabha constituency after becoming a member of the Congress Working Committee, Tharoor said the 'one nation, one election' initiative of the government would be against the existing system, which is based on parliamentary democracy, where parties cannot continue in power if they lose the majority in the house.