The redistricting process really begins on April 1, 2010—Census Day. Every American household will receive a census form in March or April, and Americans are expected to return the completed forms that ask 10 questions about every resident in the home. The U.S. Census Bureau compiles the data and delivers it to state legislatures by April 1, 2011. More than $400 billion per year in federal money is tied to the count, as are the number of congressional seats each state has in the U.S. House of Representatives. The Census Bureau will report total state populations by Dec. 31, 2010, which is when states will know if they will gain or lose seats in Congress.