10 ILCS 5/8-15
Except as in this article otherwise expressly provided, all of the provisions of Article 7 of this Act and acts hereafter passed amendatory thereof, shall, so far as the same may be applicable, apply to and govern primary elections and contests thereof held under the provisions of this Article 8. The returns of such primary shall be made to the county clerk or board of election commissioners, as the case may be, and shall be canvassed and certified as other returns made to the county clerk or board of election commissioners as the case may be.
Tabulated statements of the returns of the primary for the nomination of candidates for legislative offices shall be made to the State Board of Elections, canvassed by the Board, proclamation of the result thereof made, and certificates of nomination issued, as in the case of other tabulated statements of returns made to the State Board of Elections, and the election of any person nominated may be contested by filing with the clerk of the circuit court a petition in writing and filing notice in writing with the proper canvassing boards as required by Article 7 hereof.
10 ILCS 5/8-15