Iowa Code
Chapter 47 - ELECTION COMMISSIONERS
Section 47.4 - Election filing deadlines.

47.4 Election filing deadlines.
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. This section does not apply to the deadline for voter registration under section 48A.9, subsection 2.
97 Acts, ch 170, §10