Why are congressional districts redrawn at intervals?
(1 point)
They are redrawn after every presidential election to reflect the vote of the winning party.
They are redrawn after every congressional election to prepare for the census.
They are redrawn after every 10-year census to reflect population changes.
They are redrawn after every senatorial election to reflect population changes.
They are redrawn after every presidential election to prepare for the census.