Conversion files for ssprecs to census blocks for the g02 and s03 elections. These files were created by geocoding the registered voter files from the Secretary of State and using the precinct/block equivalencies created by mapping the registered voter precincts to the census geography. Every registered voter was assigned to a census block, either through geocoding or, for those registered voters who were not geocoded, through a statistical algorithm which assigns unassigned registered voters to the blocks most deficient in the ratio of actual registered voters to expected registered voters. Efforts were made to ensure that geocoded voters were in blocks which were either in blocks associated with the registered voter precincts (the rrprecs, actually) or blocks which were contiguous to those blocks. The data are in dbf files by elections and counties, with the following fields: ssprec ss precinct tract 2000 census tract block 2000 census block ssblkreg Registration in ssprec/census block combination sstotreg Total Registration in ssprec pctssprec Percent of ssprec in census block (100 * ssblkreg/sstotreg) blktotreg Total Registration in census block pctblk Percent of block in ss precinct (100 * ssbklkreg/blktotreg) Geocoding rates The geocoding rates were comparable to those used in the construction of the 2001 block-based dataset with several exceptions, the most important one being Los Angeles. While the statistical algorithm should produce relatively accurate mappings if this happens, efforts will be made to correct these low geocoding rates. Several counties are missing (Del Nortre, El Dorado) and there is a problem with the registered voter count on Yuba for the S03 election. Geocoding rates are as follows, where reg_geo is the number of registered voters geocoded and assign is the number of registered voters assigned through the use of the statistical algorithm (passign is thus the proportion of registered voters in the county and election geocoded). +---------+-------+----------+--------+---------+---------+---------+---------+ | version | epoch | election | county | totreg | reg_geo | assign | passign | +---------+-------+----------+--------+---------+---------+---------+---------+ | 1 | d10 | s03 | 1 | 699000 | 666759 | 32241 | 0.95 | | 1 | d10 | g02 | 1 | 657851 | 629051 | 28800 | 0.96 | | 1 | d10 | g02 | 2 | 826 | 576 | 250 | 0.70 | | 1 | d10 | s03 | 2 | 820 | 565 | 255 | 0.69 | | 1 | d10 | g02 | 3 | 18960 | 15685 | 3275 | 0.83 | | 1 | d10 | s03 | 3 | 19234 | 15890 | 3344 | 0.83 | | 1 | d10 | g02 | 4 | 111697 | 105072 | 6625 | 0.94 | | 1 | d10 | s03 | 4 | 112450 | 105397 | 7053 | 0.94 | | 1 | d10 | g02 | 5 | 24904 | 18226 | 6678 | 0.73 | | 1 | d10 | s03 | 5 | 25566 | 18688 | 6878 | 0.73 | | 1 | d10 | g02 | 6 | 7436 | 5677 | 1759 | 0.76 | | 1 | d10 | s03 | 6 | 7485 | 5694 | 1791 | 0.76 | | 1 | d10 | g02 | 7 | 483569 | 447704 | 35865 | 0.93 | | 1 | d10 | s03 | 7 | 450016 | 414183 | 35833 | 0.92 | | 1 | d10 | g02 | 8 | NULL | NULL | NULL | NULL | | 1 | d10 | s03 | 8 | NULL | NULL | NULL | NULL | | 1 | d10 | g02 | 9 | NULL | NULL | NULL | NULL | | 1 | d10 | s03 | 9 | NULL | NULL | NULL | NULL | | 1 | d10 | g02 | 10 | 339825 | 319448 | 20377 | 0.94 | | 1 | d10 | s03 | 10 | 339784 | 318508 | 21276 | 0.94 | | 1 | d10 | g02 | 11 | 11275 | 7490 | 3785 | 0.66 | | 1 | d10 | s03 | 11 | 11239 | 7426 | 3813 | 0.66 | | 1 | d10 | g02 | 12 | 74457 | 57808 | 16649 | 0.78 | | 1 | d10 | s03 | 12 | 78686 | 60594 | 18092 | 0.77 | | 1 | d10 | g02 | 13 | 49516 | 32603 | 16913 | 0.66 | | 1 | d10 | s03 | 13 | 49776 | 33474 | 16302 | 0.67 | | 1 | d10 | g02 | 14 | 10281 | 7251 | 3030 | 0.71 | | 1 | d10 | s03 | 14 | 9877 | 7003 | 2874 | 0.71 | | 1 | d10 | g02 | 15 | 255686 | 236655 | 19031 | 0.93 | | 1 | d10 | s03 | 15 | 264121 | 243855 | 20266 | 0.92 | | 1 | d10 | g02 | 16 | 45316 | 40985 | 4331 | 0.90 | | 1 | d10 | s03 | 16 | 46143 | 41588 | 4555 | 0.90 | | 1 | d10 | g02 | 17 | 31562 | 24612 | 6950 | 0.78 | | 1 | d10 | s03 | 17 | 30160 | 23493 | 6667 | 0.78 | | 1 | d10 | g02 | 18 | 14575 | 11565 | 3010 | 0.79 | | 1 | d10 | s03 | 18 | 14636 | 11609 | 3027 | 0.79 | | 1 | d10 | g02 | 19 | 3618479 | 2035443 | 1583036 | 0.56 | | 1 | d10 | s03 | 19 | 3662199 | 2061337 | 1600862 | 0.56 | | 1 | d10 | g02 | 20 | 42021 | 38899 | 3122 | 0.93 | | 1 | d10 | s03 | 20 | 43786 | 40399 | 3387 | 0.92 | | 1 | d10 | g02 | 21 | 139746 | 131867 | 7879 | 0.94 | | 1 | d10 | s03 | 21 | 142613 | 134450 | 8163 | 0.94 | | 1 | d10 | g02 | 22 | 11358 | 7927 | 3431 | 0.70 | | 1 | d10 | s03 | 22 | 11477 | 8013 | 3464 | 0.70 | | 1 | d10 | g02 | 23 | 45199 | 34662 | 10537 | 0.77 | | 1 | d10 | s03 | 23 | 46789 | 35950 | 10839 | 0.77 | | 1 | d10 | g02 | 24 | 93994 | 82684 | 11310 | 0.88 | | 1 | d10 | s03 | 24 | 88360 | 77641 | 10719 | 0.88 | | 1 | d10 | g02 | 25 | 5115 | 1811 | 3304 | 0.35 | | 1 | d10 | s03 | 25 | 5257 | 1853 | 3404 | 0.35 | | 1 | d10 | g02 | 26 | 5761 | 2800 | 2961 | 0.49 | | 1 | d10 | s03 | 26 | 5811 | 2838 | 2973 | 0.49 | | 1 | d10 | g02 | 27 | 152528 | 142025 | 10503 | 0.93 | | 1 | d10 | s03 | 27 | 149937 | 139435 | 10502 | 0.93 | | 1 | d10 | g02 | 28 | 62692 | 54333 | 8359 | 0.87 | | 1 | d10 | s03 | 28 | 64541 | 55751 | 8790 | 0.86 | | 1 | d10 | g02 | 29 | 60442 | 55706 | 4736 | 0.92 | | 1 | d10 | s03 | 29 | 61054 | 56110 | 4944 | 0.92 | | 1 | d10 | g02 | 30 | 1288917 | 1209785 | 79132 | 0.94 | | 1 | d10 | s03 | 30 | 1325944 | 1241439 | 84505 | 0.94 | | 1 | d10 | g02 | 31 | 154560 | 133267 | 21293 | 0.86 | | 1 | d10 | s03 | 31 | 161289 | 135522 | 25767 | 0.84 | | 1 | d10 | g02 | 32 | 12410 | 0 | 12410 | 0.00 | | 1 | d10 | s03 | 32 | 12739 | 0 | 12739 | 0.00 | | 1 | d10 | g02 | 33 | 643545 | 573961 | 69584 | 0.89 | | 1 | d10 | s03 | 33 | 655496 | 576322 | 79174 | 0.88 | | 1 | d10 | g02 | 34 | 577019 | 558230 | 18789 | 0.97 | | 1 | d10 | s03 | 34 | 615063 | 592950 | 22113 | 0.96 | | 1 | d10 | g02 | 35 | 26523 | 23550 | 2973 | 0.89 | | 1 | d10 | s03 | 35 | 25151 | 22130 | 3021 | 0.88 | | 1 | d10 | g02 | 36 | 586715 | 521669 | 65046 | 0.89 | | 1 | d10 | s03 | 36 | 644766 | 569660 | 75106 | 0.88 | | 1 | d10 | g02 | 37 | 1398504 | 1077971 | 320533 | 0.77 | | 1 | d10 | s03 | 37 | 1291280 | 994458 | 296822 | 0.77 | | 1 | d10 | g02 | 38 | 445678 | 437122 | 8556 | 0.98 | | 1 | d10 | s03 | 38 | 453315 | 444631 | 8684 | 0.98 | | 1 | d10 | g02 | 39 | 245459 | 221862 | 23597 | 0.90 | | 1 | d10 | s03 | 39 | 239345 | 214624 | 24721 | 0.90 | | 1 | d10 | g02 | 40 | 129390 | 118393 | 10997 | 0.92 | | 1 | d10 | s03 | 40 | 127295 | 115992 | 11303 | 0.91 | | 1 | d10 | g02 | 41 | 327804 | 315073 | 12731 | 0.96 | | 1 | d10 | s03 | 41 | 337825 | 324479 | 13346 | 0.96 | | 1 | d10 | g02 | 42 | 191576 | 177639 | 13937 | 0.93 | | 1 | d10 | s03 | 42 | 190690 | 175416 | 15274 | 0.92 | | 1 | d10 | g02 | 43 | 684884 | 649520 | 35364 | 0.95 | | 1 | d10 | s03 | 43 | 719882 | 681986 | 37896 | 0.95 | | 1 | d10 | g02 | 44 | 129927 | 120753 | 9174 | 0.93 | | 1 | d10 | s03 | 44 | 129011 | 117878 | 11133 | 0.91 | | 1 | d10 | g02 | 45 | 84882 | 77615 | 7267 | 0.91 | | 1 | d10 | s03 | 45 | 88354 | 80589 | 7765 | 0.91 | | 1 | d10 | g02 | 46 | 2167 | 29 | 2138 | 0.01 | | 1 | d10 | s03 | 46 | 2215 | 28 | 2187 | 0.01 | | 1 | d10 | g02 | 47 | 25072 | 20078 | 4994 | 0.80 | | 1 | d10 | s03 | 47 | 25742 | 20614 | 5128 | 0.80 | | 1 | d10 | g02 | 48 | 174424 | 164217 | 10207 | 0.94 | | 1 | d10 | s03 | 48 | 171685 | 160588 | 11097 | 0.94 | | 1 | d10 | g02 | 49 | 237799 | 222345 | 15454 | 0.94 | | 1 | d10 | s03 | 49 | 235304 | 219309 | 15995 | 0.93 | | 1 | d10 | g02 | 50 | 211998 | 203318 | 8680 | 0.96 | | 1 | d10 | s03 | 50 | 204663 | 196154 | 8509 | 0.96 | | 1 | d10 | g02 | 51 | 36921 | 34509 | 2412 | 0.93 | | 1 | d10 | s03 | 51 | 38742 | 35986 | 2756 | 0.93 | | 1 | d10 | g02 | 52 | 26799 | 23093 | 3706 | 0.86 | | 1 | d10 | s03 | 52 | 28217 | 24188 | 4029 | 0.86 | | 1 | d10 | g02 | 53 | 7584 | 1783 | 5801 | 0.24 | | 1 | d10 | s03 | 53 | 7223 | 1713 | 5510 | 0.24 | | 1 | d10 | g02 | 54 | 125065 | 111753 | 13312 | 0.89 | | 1 | d10 | s03 | 54 | 127374 | 113467 | 13907 | 0.89 | | 1 | d10 | g02 | 55 | 29769 | 23922 | 5847 | 0.80 | | 1 | d10 | s03 | 55 | 30654 | 24607 | 6047 | 0.80 | | 1 | d10 | g02 | 56 | 386057 | 357514 | 28543 | 0.93 | | 1 | d10 | s03 | 56 | 366387 | 338267 | 28120 | 0.92 | | 1 | d10 | g02 | 57 | 78841 | 59159 | 19682 | 0.75 | | 1 | d10 | s03 | 57 | 77930 | 58081 | 19849 | 0.75 | | 1 | d10 | g02 | 58 | 23671 | 290 | 23381 | 0.01 | | 1 | d10 | s03 | 58 | 4517 | 47 | 4470 | 0.01 | +---------+-------+----------+--------+---------+---------+---------+---------+