Notwithstanding the provisions of any other section of this division, if a holder of title to land enters into a contract for the sale of the land on deferred installments of the purchase price, the purchaser named in the contract is entitled to cast one-half of the vote allotted to such land at any district election if all the following have occurred:
(a) The land is separately assessed on the county assessment roll.
(b) A copy of the contract of sale is filed with the secretary at least 30 days prior to the date of the election.
(c) The purchaser is not delinquent for more than six months in the payment of any sums required to be paid under the contract.
For the purposes of this section, the county assessor shall, at the request of any purchaser, separately assess and separately list all such lands upon the assessment roll.