Ron Liepert is battling long-time MP Rob Anders for the nomination. Liepert is the former finance minister for the Alberta Progressive Conservatives and Anders has been MP for the area for 17 years — but the creation of new federal ridings in 2012 means Anders has to once again earn the nomination from constituents in the newly-created riding of Calgary Signal Hill.
Results are expected anytime after 8 p.m. MT.
The CBC's Jennifer Lee will be at the Calgary French and International School as results are announced.
Six-term backbencher Anders has characterized his battle with Liepert as a fight for the soul of the Conservative Party.
Two weeks ago, he accused Liepert of signing up a list of "temporary Tories" to hijack the nomination battle and released three of their names during a scrum with reporters.
CBC News later learned one of those was a case of mistaken identity and Anders issued an apology to both women involved in the mix-up.
Anders was also scolded by the Conservative Party at the same time for what they say were misleading phone calls that left the impression members of Anders' campaign were calling from Liepert's campaign.
The chastising came after Liepert lodged a complaint with Elections Canada about the calls to party members.