Colo. Rev. Stat. § 31-10-614
When all the votes have been read and counted, the election officials selected in accordance with section 31-10-409 shall deliver to the clerk the certificate and statement required by section 31-10-613, the ballot boxes and all keys thereto, and the registration list, pollbooks, tally sheets, spoiled ballots, unused ballots, ballot stubs, oaths, affidavits, and other election papers and supplies. Such delivery shall be made at once and with all convenient speed, and informality in such delivery shall not invalidate the vote of any precinct when delivery has been made previous to the completion of the official abstract of the votes by the canvassers. The clerk shall give his receipt for all such papers so delivered.
C.R.S. § 31-10-614
This section is similar to former § 31-10-614 as it existed prior to 1975.