Sec. 1. (a) This chapter applies to the filling of a candidate vacancy of a former candidate for nomination or election to an office at a general, municipal, or special election that occurs after the thirty-first day before a general, municipal, or special election that is due to any of the following:
(1) The death of a candidate.
(2) The withdrawal of a candidate.
(3) The disqualification of a candidate under IC 3-8-1-5.
(4) A court order issued under IC 3-8-7-29(d).
(5) The successful challenge of a candidate nominated by a state, county, or town convention of a political party.
(6) The successful challenge of a candidate under IC 3-8-8.
(7) The successful challenge of a candidate under IC 3-13-1-16.5 or IC 3-13-1-20.5.
(8) The successful challenge of a candidate in a judicial proceeding.
(b) Action to fill a candidate vacancy under this chapter must be taken not later than 6 a.m. on election day.