(1) The county clerk shall:

1. (a) except as provided in Subsection 20A-2-107.5(1)(c), record the party affiliation designated by the voter on the voter registration form as the voter's party affiliation; or

2. (b) if no political party affiliation is designated by the voter on the voter registration form:

   1. (i) except as provided in Subsection (1)(b)(ii), record the voter's party affiliation as the party that the voter designated the last time that the voter designated a party on a voter registration form, unless the voter more recently registered as "unaffiliated"; or

   2. (ii) record the voter's party affiliation as "unaffiliated" if the voter:

      1. (A) did not previously designate a party;
      2. (B) most recently designated the voter's party affiliation as "unaffiliated"; or
      3. (C) did not previously register.

(2)

1. (a) Any registered voter may designate or change the voter's political party affiliation by complying with the procedures and requirements of this Subsection (2).
2. (b) A registered voter may designate or change the voter's political party affiliation by filing a signed form with the county clerk that identifies the registered political party with which the voter chooses to affiliate.
3. (c) Except as provided in Subsection (2)(d), a signed form designating or changing a voter's political party affiliation takes effect when the county clerk receives the signed form.
4. (d) In an even-numbered year, a form described in Subsection (2)(c) received by the county clerk after March 31 takes effect on the day after that year's regular primary election if the form changes a registered voter's affiliation with one political party to affiliate with another political party.
5. (e) Any part of a form described in Subsection (2)(d), other than the voter's designation or change of political party affiliation, takes effect when the county clerk receives the signed form.

6. (f) For purposes of Subsection (2)(d), a signed form described in Subsection (2)(c) is received by the county clerk on or before March 31 if:

   1. (i) the individual submits the form in person at the county clerk's office no later than 5 p.m. on the last business day before April 1;
   2. (ii) the individual submits the form electronically through the system described in Section 20A-2-206, at or before 11:59 p.m. on March 31; or
   3. (iii) the individual's form is clearly postmarked on or before March 31.
7. (g) Subsection (2)(d) does not apply to the party affiliation designated by a voter on the voter registration form if the voter has not previously been registered to vote in the state.