 In the run @-@ up to each federal election , the National Register of Electors undergoes a comprehensive revision process , running for 28 days starting on the 33rd day before the election . Each federal electoral district is responsible for revising the list of electors in that district . Targeted revision involves sending pairs of " revising agents " to certain areas such as new residential developments , areas known for high population mobility , student residences , nursing homes and chronic care facilities . Electors may also be revised by using mail @-@ in forms , by visiting the returning office in that electoral district , or by registering on polling day . 
