California Proposition 40, Referendum on the State Senate Redistricting Plan (2012)

Each state lawmaker represents people who live in a specific district. Every 10 years after the U.S. census, the Citizens Redistricting Commission adjusts the maps for these districts to make sure each district has about the same number of people (a process called “redistricting”). The law says that these district maps can be challenged by a “referendum,” requiring voters to approve them. Enough signatures were gathered to challenge the current district maps for state Senators.

What Prop 40 would do if it passes:

  • A YES vote would approve the current state Senate district maps created and certified in 2011.
  • A NO vote would reject the current maps, and court-appointed officials would be required to set temporary boundaries for use in future elections.
  • Either way, there is no effect on the district boundaries for state Assembly, Board of Equalization, or representatives in Congress.

Effect on the state budget:

  • If voters approve the current state Senate district maps, there would be no effect on state or local government budgets.

  • If voters reject the current state Senate district maps, it would cost the state about $500,000 to draw new district maps, and it would cost all counties about $500,000 to develop new election materials.

People for Prop 40 say (

  • A YES vote keeps the current districts and upholds the will of the people in creating the Citizens Redistricting Commission.

People against Prop 40 have chosen to stop campaigning and are no longer asking voters for a NO vote.


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