Reapportionment n. : A second or a new apportionment.

Example:
How does the federal government know which seats are lost after Reapportionment?

Taxonomy
population, malapportionment, seats, states, districts, voters, Apportionment, elections, senators, constituencies, gain seats, political power, district elections, State legislatures, representation, Senate, parties, x+1.

Defination from the web:
... in malapportionment was the Alabama state legislature's refusal to reapportion either the state House or Senate from 1901 until ... Reapportionment and Redistricting in the US an article from the ACE Project. Index of articles relating to Boundary Delimitation from the ACE Project ...