10 ILCS 5/7-5
2021 Illinois Compiled Statutes|Chapter 10 - ELECTIONS|10 ILCS 5/ - Election Code.|Article 7 - The Making Of Nominations By Political Parties

 (from Ch. 46, par. 7-5)Sec. 7-5.         (a) Primary elections shall be held on the dates prescribed in  Article 2A.(b) Notwithstanding the provisions of any other statute, no primary  shall be held for an established political party in any township,  municipality, or ward thereof, where the nomination of such  party for every office to be voted upon by the electors of such  township, municipality, or ward thereof, is uncontested.  Whenever a  political party's nomination of candidates is uncontested as to one or  more, but not all, of the offices to be voted upon by the electors of a  township, municipality, or ward thereof, then a primary shall  be held for that party in such township, municipality, or ward thereof;  provided that the primary ballot shall not include those offices  within such township, municipality, or ward thereof, for which the  nomination is uncontested.  For purposes of this Article, the nomination of  an established political party of a candidate for election to an office shall  be deemed to be uncontested where not more than the number of persons to be  nominated have timely filed valid nomination papers seeking the nomination  of such party for election to such office.(c) Notwithstanding the provisions of any other statute, no primary  election shall be held for an established political party for any special  primary election called for the purpose of filling a vacancy in the office  of representative in the United States Congress where the nomination of  such political party for said office is uncontested.  For the purposes of  this Article, the nomination of an established political party of a  candidate for election to said office shall be deemed to be uncontested  where not more than the number of persons to be nominated have timely filed  valid nomination papers seeking the nomination of such established party  for election to said office. This subsection (c) shall not apply if such  primary election is conducted on a regularly scheduled election day.(d) Notwithstanding the provisions in subsection (b) and (c) of this  Section whenever a person who has not timely filed valid nomination papers  and who intends to become a write-in candidate for a political party's  nomination for any office for which the nomination is uncontested files a  written statement or notice of that intent with the State Board of  Elections or the local election official with whom nomination papers for  such office are filed, a primary ballot shall be prepared and a primary  shall be held for that office.  Such statement or notice shall be filed on  or before the date established in this Article for certifying candidates  for the primary ballot.  Such statement or notice shall contain (i) the  name and address of the person intending to become a write-in candidate,  (ii) a statement that the person is a qualified primary elector of the  political party from whom the nomination is sought, (iii) a statement that  the person intends to become a write-in candidate for the party's  nomination, and (iv) the office the person is seeking as a write-in  candidate.  An election authority shall have no duty to conduct a primary  and prepare a primary ballot for any office for which the nomination is  uncontested, unless a statement or notice meeting the requirements of this  Section is filed in a timely manner.(e) The polls shall be open from 6:00 a.m. to 7:00 p.m.     (Source: P.A. 86-873.)