Liberal Democrats in Devon and Cornwall will choose from two candidates to be the party's police commissioner nominee in the region, the Western Morning News understands.
Ballot papers featuring Cornwall councillor Paula Dolphin and former police officer Brian Blake, who has stood for the party at council elections in the South Hams, Devon, have been sent to members.
The result will be announced at a meeting in Liskeard on September 19.
In November, elections will be held in 41 police areas across the country for US-style police and crime commissioners, including one for Devon and Cornwall and another for Avon and Somerset.
The Lib Dems have been opposed to the policy, but branches in the region have gone against directions from central office to put forward a candidate.
Lib Dem councillor Brian Greenslade, once Devon County Council leader, is to stand as an independent.
Meanwhile, former Lib Dem Devon County councillor John Smith – who resigned from the party two years ago – has also put forward his name as an independent.
Former naval base commander Tony Hogg has secured the Conservative Party nomination, while Plymouth councillor Nicky Williams will contest the election for Labour.
Commissioners will control the police budget and have the power to hire and fire the chief constable, who will continue to run operational policing.
The £85,000-a-year post will see the commissioner replace little-known police authorities.
A new police and crime panel will act as watchdog.