§ C.R.S. § 1-1-105.5(untitled)

District elections conducted on or prior to May 3, 2016 - limitations on
contests based on elector qualifications - exceptions - validation - definitions. (1) (a) Except
as provided in paragraph (c) of this subsection (1), for any district election conducted under this
code or the "Colorado Local Government Election Code", article 13.5 of this title, and
notwithstanding any provision of law to the contrary:
(I) No district election conducted prior to April 21, 2016, may be contested on the
grounds that any person who voted at such election was not an eligible elector unless such a
contest was initiated prior to April 21, 2016.
Colorado Revised Statutes 2024
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(II) No district election conducted on May 3, 2016, may be contested on the grounds that
any person who voted at such election was not an eligible elector unless such a contest was
initiated within the time period specified in section 1-11-213 or section 1-13.5-1403, C.R.S., as
applicable.
(b) Except when a contest to elector qualifications has been timely initiated as described
in this section, this section validates, ratifies, and confirms the qualifications of any person who
voted at any district election held on or before May 3, 2016, notwithstanding any defects or
irregularities in such qualifications.
(c) The bar to election contests in paragraph (a) of this subsection (1) does not apply to:
(I) Any district election conducted after January 1, 2012, if the contest to such election is
made on the grounds that federal or state constitutional rights of eligible electors were violated in
the conduct of the election; or
(II) Any district election conducted before January 1, 2012, if the contest to such
election was initiated prior to April 21, 2016.
(2) For purposes of this section, "district" means any district formed under part 5 of
article 20 of title 30, part 6 of article 25 of title 31, part 8 of article 25 of title 31, part 12 of
article 25 of title 31, or article 1 of title 32, C.R.S.