Question: when did campaigning for the 2016 election start
Answer: 2015-06-16; 2015 June, 16; 06 16 2015; 16 June 2015; 16-06-2015; 2015-06-16; 06/16/2015; 16 06 2015; 2015 June 16; 16/06/2015; 2015 06 16; 06-16-2015