Updated voter registration numbers in Iowa's Congressional districts

For the fourth month in a row, registered Republicans in Iowa outnumber registered Democrats. The latest figures from the Iowa Secretary of State’s office (pdf) show 655,457 active no-party voters statewide, 619,452 active Republicans, and 598,074 active Democrats. The number of registered Democrats rose slightly during the past month, but Republican ranks grew by much more, probably because of the many competitive GOP primaries on June 5.

After the jump I’ve posted the latest active voter registration numbers in all 99 Iowa counties, grouped by Congressional district. The most evenly-split county is still Decatur in south-central Iowa, with 1,741 registered Democrats, 1,799 Republicans, and 1,753 no-party voters as of July 2.

Any comments about the 2012 elections in Iowa are welcome in this thread.  

Active voter registration numbers as of July 2012

IA-01

County Democrats Republicans no-party voters
Allamakee 2,189 4,250 3,146
Benton 4,713 5,068 7,192
Black Hawk 26,386 19,887 27,898
Bremer 3,635 5,010 6,885
Buchanan 3,940 3,229 6,113
Clayton 3,303 3,210 4,492
Delaware 2,605 3,920 4,734
Dubuque 24,634 14,517 21,522
Fayette 3,653 4,148 3,898
Howard 1,944 1,488 2,487
Iowa 2,787 3,703 4,681
Jackson 5,936 2,701 5,367
Jones 3,534 3,696 5,586
Linn 47,307 38,010 47,513
Marshall 7,358 8,026 8,983
Mitchell 1,809 2,565 2,620
Poweshiek 3,456 3,758 4,528
Tama 3,235 3,458 4,093
Winnishiek 3,292 4,392 4,529
Worth 1,591 1,841 1,959
 
total 157,307 136,877 178,226

IA-02

County Democrats Republicans no-party voters
Appanoose 2,730 2,928 2,972
Cedar 3,131 3,651 4,403
Clarke 1,705 1,863 2,292
Clinton 10,841 7,366 12,505
Davis 1,961 1,514 1,367
Decatur 1,741 1,799 1,753
Des Moines 11,396 6,075 7,912
Henry 2,956 5,507 4,739
Jasper 8,661 7,144 7,078
Jefferson 3,152 3,605 3,261
Johnson 35,973 17,527 27,137
Keokuk 2,392 2,350 2,199
Lee 10,008 4,326 7,875
Louisa 1,834 2,518 2,509
Lucas 1,422 2,103 1,994
Mahaska 3,016 5,891 4,642
Marion 5,458 8,648 6,977
Monroe 1,786 1,500 1,427
Muscatine 7,584 8,293 10,034
Scott 32,895 29,699 42,437
Van Buren 1,075 2,217 1,594
Wapello 9,507 5,306 6,587
Washington 2,899 5,801 4,648
Wayne 1,013 1,358 1,082
 
total 165,136 139,989 169,424

IA-03

County Democrats Republicans no-party voters
Adair 1,124 2,034 1,934
Adams 696 962 1,112
Cass 1,616 4,911 2,957
Dallas 9,526 15,552 15,659
Fremont 1,342 2,187 1,815
Guthrie 2,051 2,760 2,720
Madison 3,016 3,979 3,658
Mills 1,872 4,745 2,992
Montgomery 1,055 3,955 1,820
Page 1,627 4,410 3,467
Polk 96,323 80,352 70,984
Pottawattamie 15,553 20,975 16,941
Ringgold 884 1,488 701
Taylor 799 2,004 1,293
Union 1,730 2,852 2,842
Warren 9,667 10,456 9,784
 
total 148,881 163,622 140,679

IA-04

County Democrats Republicans no-party voters
Audubon 1,326 1,611 1,344
Boone 5,253 5,581 6,309
Buena Vista 2,794 3,916 4,405
Butler 1,729 4,637 3,056
Calhoun 1,434 2,381 2,648
Carroll 4,214 4,036 6,150
Cerro Gordo 9,632 8,021 12,283
Cherokee 2,045 3,194 3,207
Chickasaw 2,997 2,216 3,592
Clay 2,641 4,579 4,269
Crawford 2,649 3,132 3,341
Dickinson 2,658 5,301 4,552
Emmet 2,248 1,703 3,079
Floyd 3,080 2,707 4,449
Franklin 1,229 3,128 2,213
Greene 2,080 2,145 2,233
Grundy 1,471 4,119 2,946
Hamilton 2,758 3,608 3,603
Hancock 1,600 3,324 2,851
Hardin 2,671 4,668 3,808
Harrison 2,500 3,494 2,367
Humboldt 1,371 2,499 2,408
Ida 968 2,170 1,879
Kossuth 3,522 3,427 4,066
Lyon 900 5,423 1,623
Monona 2,122 1,889 2,373
O’Brien 1,350 5,265 2,710
Osceola 506 2,625 1,046
Palo Alto 2,458 1,558 2,078
Plymouth 3,329 7,950 5,689
Pocahontas 1,124 1,725 2,191
Sac 1,375 3,096 2,529
Shelby 2,218 3,458 3,013
Sioux 1,565 14,217 3,461
Story 14,624 14,915 17,532
Webster 8,791 6,859 8,260
Winnebago 1,547 3,061 2,532
Woodbury 18,070 18,810 18,484
Wright 1,901 3,516 2,549
 
total 126,750 179,964 167,128

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