REAPPORTIONMENT
reallotment, reapportionment, reallocation
(noun) a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results)
Source: WordNet® 3.1
Etymology
Noun
reapportionment (countable and uncountable, plural reapportionments)
The act of reapportioning; a second or subsequent apportionment.
(US, politics) Reassignment of representation in a legislature, especially of U.S. House of Representative seats, in accord with changes in the census population determination.
Source: Wiktionary
Re`ap*por"tion*ment, n.
Definition: A second or a new apportionment.
Source: Webster’s Unabridged Dictionary 1913 Edition