Filename:	state_p18_rg_blk_map.dbf, state_p18_rg_blk_map.csv

File URL:	http://statewidedatabase.org/pub/data/P18/state/state_p18_rg_blk_map.zip

Dataset:	2018 Primary Election RG precinct to 2010 Census Block conversion file

Description:	This file contains statewide RG precinct to Census block correspondances based on the proportion of registered voters geocoded to each precinct-block record. 
This file can be used to merge 2010 block or tract data to the 2018 Primary Election RG precincts as well as, to merge 2010 Census block or tract data to the 2018 Primary Election RG precincts.

Geographic unit:	RG precincts are derived from the County Registrar of Voters' original registration precincts. The Census blocks are from the U.S. Census Bureau's 2010 TIGER/Line and are the smallest statistical reporting areas for decennial Census data. 

Technical documentation: http://statewidedatabase.org/d10/Creating%20CA%20Official%20Redistricting%20Database.pdf

File fields:

	ELECTION - 3 digit, election abbreviation

	TYPE - geographic unit of file

	FIPS - 5 digit code composed of the 2 digit state code FIPS for California, '06,' followed by the 3 digit county FIPS code 

	RGPREC_KEY - FIPS code followed by the RG precinct number or name

	RGPREC - RG precinct number or name

	BLOCK_KEY - 15 digit block code consisiting of the 5 digit FIPS, 6 digit tract code and 4 digit block code.

	TRACT - 3 to 6 digit tract code without leading zeros
	
	BLOCK - 4 digit block code

	BLKREG - number of registered voters geocoded to the transecting RG precinct and Census block area 

	RGTOTREG - total number of registered voters in the RG precinct

	PCTRGPREC - percent of the total number of registered voters in the RG precinct that are located within the transecting census block and is calculated by dividing BLKREG by the RGTOTREG i.e. PCTRGPREC = (BLKREG * 100) / RGTOTREG.

	BLKTOTREG - total number of registered voters in the Census block

	PCTBLK - percent of the total number of registered voters in the 2010 Census block that are located within the transecting RG precinct and is calculated by dividing BLKREG by the BLKTOTREG i.e. PCTBLK = (BLKREG * 100) / BLKTOTREG.

Date last modified:07/24/2019 Previous versions:	none

County records unavailable at time of file creation:		
025 - Imperial County data are still being collected and processed.
047 - Merced County data are still being collected and processed.

Data user notes: none