Conn. Gen. Stat. § 9-50b: State-wide centralized voter registration system. Updates re voter activity and redistricting information.

(a) As used in this section, “state-wide centralized voter registration system” means a computerized system designed and maintained by the Secretary of the State which includes: (1) Voter registration information prescribed by the Secretary, (2) information contained in applications for admission as electors described in section 9-20, (3) information needed to compile registry lists and enrollment lists under sections 9-35 and 9-54, (4) information required by section 9-50a, and (5) other information for use in complying with the provisions of this title.

(b) Not later than July 1, 2003, each registrar of voters shall transmit to the office of the Secretary of the State all elector information required by the office to complete the state-wide centralized voter registration system. Each registrar shall transmit such information in a format prescribed by the Secretary. Not later than September 1, 2003, each registrar of voters shall participate in the state-wide centralized voter registration system in the manner prescribed by the Secretary. On and after July 1, 2024, each town clerk shall utilize the state-wide centralized voter registration system whenever carrying out any provision of this title.

(c) Not later than sixty days after each election or primary, the registrars of voters shall update the state-wide centralized voter registration system and indicate whether the eligible voters on the official registry list for such election or primary voted and, if so, whether they voted in person on the day of such election or primary, in person during the period of early voting at such election or primary or by absentee ballot.

(d) (1) Upon the adoption or other establishment of a plan of districting pursuant to article sixteenth of the amendments to the Constitution of the state, as amended by articles twenty-sixth and thirtieth of said amendments, the General Assembly, the reapportionment commission or the Supreme Court, as applicable, shall provide to the Secretary of the State all map, statistical and voting district information deemed necessary by the Secretary for the effective implementation of such plan of redistricting. Upon receipt of such information, the Secretary shall (A) update the state-wide centralized voter registration system to reflect the congressional, senatorial and assembly district lines of such plan of redistricting, and (B) transmit to the registrars of voters of each municipality the information necessary for such registrars to update the state-wide centralized voter registration system to reflect the voting district lines within such municipality of such plan of redistricting.

(2) (A) Whenever an error in the implementation within a municipality of a plan of redistricting described in subdivision (1) of this subsection (i) is identified by the Secretary of the State, the Secretary shall notify the registrars of voters of such municipality of such error, or (ii) is identified by the registrars of voters of such municipality, such registrars shall notify the Secretary of such error. For any such error as to congressional, senatorial or assembly district lines, the Secretary shall update the state-wide centralized voter registration system to correct such error. For any such error as to the voting district lines within a municipality, the registrars of voters of such municipality shall immediately update the state-wide centralized voter registration system to correct such error and certify in writing to the Secretary when such error has been corrected.

(B) For each error described in subparagraph (A) of this subdivision, the registrars of voters shall notify in writing each voter whose polling place was changed due to correction of such error, subject to the provisions of section 9-169 regarding any such correction made within ninety days prior to any election or primary.