While answering a repeated question on who could be an alternative to PM Narendra Modi to spearhead the government, senior Congress leader Shashi Tharoor on Wednesday said in a parliamentary system, the question of who is 'irrelevant' as people are not voting to elect a particular individual but a party or a coalition of parties. Tharoor, the Congress MP from Kerala's Thiruvananthapuram is seeking a record fourth term this time.