Elections Ontario's Voter Registration has replaced MPAC's VoterLookup

Electors can now use Elections Ontario's site to update their information for provincial, municipal and DSSAB elections in Ontario.  Electors adding, confirming, or updating their information using Voter Registration will need to provide proof of identity and eligibility to vote which will be reviewed by Elections Ontario.

Voter Registration website

EN:  https://RegisterToVoteON.ca 

FR:  http://InscriptionVoteON.ca