If a party has made no endorsement of a candidate for a particular state or district office, and if within the time specified in section 9-400, a candidacy for such party's nomination to such office is filed in conformity with the provisions of said section by not more than one person, no primary shall be held by such party for such office and the person filing such candidacy shall be deemed to have been lawfully chosen as the nominee of such party for such office.
(P.A. 81-447, S. 2, 23.)