It should go on the percentage of those who bother to vote, otherwise we make assumptions about the non voters that may not be realistic. If people are against the strike, they can vote against it. We shouldn't assume automatically that they are opposed
Could it also be that some are afraid of casting a vote against - especially in places of work where a closed shop mentality still exists? I'm not 'assuming that folk are opposed', just wondering why we allow powerful elements - from both sides of any debate - to have their way.