The board may, by resolution, at such time or times as it deems proper, provide for the issuance of all or any part of the bonds if:

1. (a) At an election to determine whether general obligation bonds should be issued two-thirds of the votes cast favor the issuance of the bonds.
2. (b) At an election to determine whether revenue bonds should be issued a majority of the votes cast favor the issuance of the bonds.