Membership in the UCP has grown to 123,915 heading into the party's leadership vote.
That's more than double the number of party members before the start of the leadership race in June and it raised nearly a million dollars for the party in membership dues.
The deadline to join or renew a membership to vote in the leadership election was August 12.
A membership in the party cost $10 per year with a quarter of the revenue shared with the party’s constituency associations.
Ballots to all eligible members will be mailed starting September 2 and must be back to the accounting firm overseeing the vote by October 3.
The results will be announced on October 6 at the BMO Centre in Calgary.