In 34 of the 43 states that send more than one representative to the House, the state legislature makes the final call on redrawing the district boundaries to reflect the results of each decennial census.
Seven states, mostly in the West, use independent commissions to draw lines, limiting elected officials' participation to protect against potential conflicts of interest. Virginia and New Jersey use "politician commissions" that may include legislators and public officials.
Elsewhere, district lines are passed by a majority vote in each state legislative chamber. Some states appoint advisory and backup commissions to help with the process.