Elections Canada reports increased voter turnout in advance polls in all three midwestern Ontario ridings.
About 12,436 voters have already cast their ballot in Huron Bruce, up from just over 7,800 in 2011.
There are 79,533 eligible voters in Huron Bruce.
In Bruce Grey Owen Sound, the number of voters in advance polls increased to 13,452 from 8,718. The area has 81,389 voters.
In Perth Wellington, about 10,450 people have voted, up from 6,603 in the last federal election. 75,217 people are eligible to vote in Perth Wellington.