OTTAWA – The Conservatives are poised to kill off any chance of a spring election by using the parliamentary calendar to delay a possible non-confidence motion from the Liberals. The Tories have told some of their rivals that they will push back the Liberals’ so-called opposition day – their easiest opportunity to table a non-confidence motion – to June 17. Such a move would leave opposition parties with two options: trigger a rare midsummer election with a national vote July 27 at the earliest, or keep the government alive until later this year.