The following shall be the form of the oath to be taken by each clerk:

“I (John Doe) do swear (or affirm) that I will as a clerk attend the ensuing election (or primary) during the continuance thereof, that I will carefully and truly record the number of votes that shall be given for each candidate at the election (or primary) as often as his name shall be read to me by the judge or inspectors thereof, and in all things truly and faithfully perform my duty respecting the same to the best of my judgment and ability; and that I am not directly or indirectly interested in any bet or wager on the result of this election (or primary).”