Last week's release of detailed data on the 2010 census sets the stage for the new Citizens Redistricting Commission to draw new maps for 120 legislative districts, 53 congressional districts and four Board of Equalization districts to equalize their populations.
The biggest changes will come in districts with the greatest deviation from the ideal populations as calculated on the census total for California and political number-crunchers have already developed spreadsheets laying out the deviations.
In general, urban coastal districts are underpopulated and inland suburban and rural districts are overpopulated, which should lead to a shift of legislative and congressional districts from the coastal counties to inland counties.
One set of spreadsheets comes from the Rose Institute of State and Local Government at Claremont McKenna College. Find it here.