New poll results from Mainstreet Research suggest over two-thirds of voters who took advantage of advance polling over the past four days or have already submitted a special ballot voted for the Liberals or Conservatives.

For its daily election tracking poll for iPolitics, Mainstreet has started asking Canadians if they voted at the advance polls or through a special ballot and, if so, who they voted for.

In the newest tracking poll results released Tuesday, which captured polling that took place between Oct. 12-14, 598 out of the 2,076 respondents surveyed said they voted in special ballots or advance polls. From that number, 35 per cent said they voted for the Liberals, 34.1 per cent said they cast a ballot for the Conservatives, with 13.9 per cent saying they did the same for the NDP. Another 6.9 per cent said they marked their ballot for the Bloc Québécois, 6.4 per cent said they voted for the Greens, while 3.6 per cent opted for the People’s Party, and one per cent opted for another party.

Advance polling was available from Oct. 10-14.According to Mainstreet, the margin of error for this subsample stands at plus or minus four percentage points.

Compared to Mainstreet’s national daily tracking poll results for Tuesday, early voters were more likely to vote for the Liberals and Conservatives, and were less likely to back the NDP, Bloc or Greens. In those numbers, which captured the opinions of all 2,076 voters between Oct. 12-14, 31.1 per cent of leaning and decided respondents said they’d vote for the Conservatives if the election was held today, while 30.7 per cent said they’d back the Liberals, and 17.2 per cent said they’d vote for the NDP. Another 8.5 per cent opted for the Greens, 8.1 per cent backed the Bloc, 3.6 per cent favoured Maxime Bernier’s People’s Party, and 0.9 per cent said they’d vote for another party.

The margin of error for the entire survey rests at plus or minus 2.15 percentage points, according to Mainstreet.

Breaking down the numbers by region, a plurality of early voters cast a ballot for the Liberals in Ontario (42.4 per cent), Quebec (41), Atlantic Canada (33.5) and British Columbia (31.7). The Conservatives were the most popular choice of early voters in Alberta (74.3 per cent) and the Prairies (49.1), and in second place in Ontario (35), B.C. (23.6) and Atlantic Canada (21.7), while sitting third in Quebec (16). The Liberals were in second in Alberta (10.8 per cent) and third in the Prairies (19).

The margin of error for the regions are higher than the subsample for early voters as the numbers of those being polled are smaller.

READ MORE: Liberals, Conservatives once again in statistical tie in latest Mainstreet polling

The NDP’s best performance among early voters came in Atlantic Canada (22.4 per cent), followed by B.C. (22.1), the Prairies (20.8), Ontario (15.6), Quebec (6.3) and Alberta (4.5). The Bloc finished second in Quebec with 31.7 per cent. The Greens’ best performance also came in Atlantic Canada (20.2 per cent), followed by B.C. (16.2), Alberta (6.8), Ontario (four), the Prairies (2.9) and Quebec (1.7).

Finally, the People’s Party was the strongest in the Prairies (8.6 per cent) but didn’t score above four per cent anywhere else.

More results from the poll, including provincial and regional numbers and leader favourability ratings on a national level, are available exclusively to Premium Election Package subscribers here.

(PREMIUM ELECTION SUBSCRIBERS ONLY): Daily Election Tracker

For the full methodology statement, please click here.