Send it back blank, and ACORN may fill it in for you!
Or, those motivated by Community Activists will fill in theirs, while those same Activists convince you not to (it’s unconstitutional! An abrogation of power! Leave yours blank while the inner cities churn out 20% more than are actually there).
Redistricting is at stake. If the Dems can expand their areas of the famous red/blue map just a few percent, they need never fear another nationwide election.