What I've done is taken each party's best projection result in each region (West, Ontario, Quebec, Atlantic Canada), and taken these best results to get a national, best case projection based on polls from last month.
For example, if the Conservatives had their best result in the West in an Angus-Reid poll, their best result in Ontario in a Nanos poll, their best result in Quebec in a Léger poll, and their best result in Atlantic Canada in an EKOS poll, I've taken each of these bests and combined them.
In other words, these projections are the best possible result each party could've gotten had an election taken place in the month of June.
The New Democrats have been hovering around the 40-50 level since I've started doing these in March. That month, their best case scenario was 43 seats. That increased to 50 in April, went down to 41 in May, and is now at 44.
Their best vote haul comes in British Columbia, with 30%. Next is Atlantic Canada, with 26%, the Prairies and Ontario with 18%, Quebec with 15%, and Alberta with 13%. Their biggest regional bloc is in the West, where they have 20 MPs.
The Liberals have also been rising and falling within 10 seats over the last four months, but this month's best case scenario is their worst so far. From 121 in March they sank to 113 in April, and then rose slightly to 116. But this month their best case scenario is only 111 seats, one fewer than the Conservatives.
Their regional results are 29% in British Columbia, 18% in Alberta, 23% in the Prairies, 38% in Ontario, 25% in Quebec, and 40% in Atlantic Canada. Their biggest bloc comes in Ontario, where they elect 55 MPs. Their 20 MPs in the West, 16 in Quebec, and 20 in Atlantic Canada give them good regional distribution.
Perhaps indicating that polling has not changed much over the last four months, the Conservatives, too, have been varying only within 10 seats in their best vcase scenarios. Their best result was in April, when they took 159 seats and their only majority result. They had 148 in March and May, and have now moved back into near-majority territory with 154 seats. So, a split right down the middle of the House of Commons.
Their regional results for this are 46% in British Columbia, 60% in Alberta, 48% in the Prairies, 43% in Ontario, 19% in Quebec, and 44% in Atlantic Canada. Their biggest block of MPs are in the West, where they have 75. They also have 59 in Ontario, 8 in Quebec, and 12 in Atlantic Canada.
This shows how problematic it is for the Conservatives to ignore Quebec, as some have suggested. Even if all goes well for them, they are still looking at a minority.