The park board shall conduct the election, establish precincts and polling places therein, and appoint the judges and clerks of election and fix their compensation; provided that if any other election is held at the same time, the park board may appoint the same judges and clerks of election as are appointed for such other election, and such judges and clerks of election shall also be paid for their services by such district in such amount as the board shall determine. Separate ballot boxes shall be used to receive the ballots cast for park commissioners, and separate returns of the votes cast with such ballots shall be made to the board of commissioners and said board shall, within 5 days after such election, canvass said returns and declare the result of said election and enter a record of such canvass and declaration upon its records.