If the deadline for a filing pertaining to an election falls on a day that the state or county commissioner’s office is closed for business, the deadline shall be extended to the next day that the office of state commissioner or county commissioner is open for business to receive the filing.
Iowa Code § 47.4
Election filing deadlines
Official source: Iowa Legislature. Reproduced from public-domain Iowa statutes; confirm against the official source for the current text. Not legal advice.