The special election boards established under Kan. Stat. Ann. § 25-1133, and amendments thereto, shall canvass advance voting ballots as is provided by law for the original canvass of ballots at voting places, except as is otherwise provided in this section and Kan. Stat. Ann. § 25-1136, and amendments thereto. The supervising judge of the special election board shall announce in a clear and distinct voice the names of the advance voting voters whose ballots have been received, and thereupon, the clerk of the election board shall check the names of such voters upon the advance voting voter list prescribed by Kan. Stat. Ann. § 25-1126, and amendments thereto. If a ballot has been received from a voter whose name is not on such list, the name shall be entered on the advance voting poll book. One of the judges shall open each ballot envelope without defacing the form printed thereon and without mutilating the enclosed ballot or ballots. Such ballots shall then be disposed of as if the advance voting voters were present. One of the judges shall clip the numbers from the ballots and deposit them in the proper ballot boxes without unfolding them. Until the closing of the polls, at least 25 ballots shall remain uncounted in each ballot box.