70.1. Subject to the second paragraph, subsections 1 to 8 of section 573, sections 573.1 to 573.1.0.4 and sections 573.3 to 573.3.2 of the Cities and Towns Act (chapter C-19) apply to the returning officer, with the necessary modifications. During the election period within the meaning of section 364, the returning officer may award any contract involving an expenditure of $25,000 or more after a call for tenders, by way of written invitation, to at least two contractors or two suppliers, as the case may be. However, where an exceptional situation that may jeopardize the holding of the election occurs during that period, the returning officer may award any contract without being required to call for tenders.