OO-- And the Liberals are running third in many parts of the country. There are extremely few seats that can be one or lost based on strategic voting for the Liberals anyway. If you take all the ridings, eliminate the ones that are not close where no strategy can make a difference. Then eliminate all the ones where the Conservatives are not contenders. Then eliminate all the ones where the Liberals are not in the race. What is left are the close swing ridings that are essentially Liberal-Conservative matchups. You will find there are few of those. Even if you live in one of those, the chance that strategic voting could turn your riding and that ridings like yours will turn the difference between who holds power is so remote that the obscenity of not supporting your preferred choice is hardly worth it. Canada has never had an election that close on voting day. But the fear of that has distorted many elections.
Even in Ontario-- which is the only province where such strategic votign could even in theory be viable, there are a very small number of ridings where a New Democrat strategically voting Liberal could deny a Conservative a seat. Of course it may deliver NDP seats to the Liebrals but that is the point isn't it?