What’s worrying party strategists in the campaign's final days?

What will keep federal party strategists lying awake this weekend—the last one before Monday's federal election? Evan Solomon looks ahead

With the last weekend before the election finally upon us, what is keeping the party’s political strategists up at night?

For the Liberals, it’s their vote concentration and vote efficiency. How many seats does their popular vote really translate into? For the Conservatives, it’s all about defending their incumbents: Can they fend off the “Anyone but Harper” movement? And for the NDP, it’s the Mushy Mulcair effect: How soft is NDP support in fortress Quebec, and in key parts of Ontario and British Columbia?