United States Elections Project
   
 

2008 Presidential Nomination Contest Turnout Rates

Last Updated: 10/08/08

Please see the FAQ for information on the construction of these statistics. Presidential nomination contest dates are drawn from electionline.org. The number of people participating in a primary is collected from official state elections websites. Total ballots cast is the sum of the voters in the nomination contests, and where possible, includes minor party candidates and blank or otherwise spoiled ballots. The number of people who participated in a caucus is collected from various sources, including state party websites, newspaper articles, and in some cases phone calls to state parties. Note that caucus turnout numbers are often of less reliable since they are reported by parties who have an incentive to exaggerate participation in their caucus and do not have the same data collection infrastructure as their states. Where possible, links are provided to the turnout data source, including separate state report of total ballots cast, if it exists.

The denominator data reflect the July 1, 2006 and 2007 voting-age population estimates extrapolated to first of the month of the 2008 nomination contest within a state, non-citizen estimates from the 2007 American Community Survey, the year end-year 2006 DOJ prison report and the end-year 2006 DOJ probation and parole report. The overseas eligible estimate is recently updated with data provided by the Federal Voting Assistance Program. Note that these data provide preliminary estimates of the turnout and voting-eligible population for the 2008 presidential nomination elections. These statistics are updated continually as new data become available.

VEP Total Ballots Cast Turnout Rate is the total ballots cast divided by the voting-eligible population or VEP. In instances where the two political parties did not simultaneously hold their nomination contests, the first instance reflects turnout of the first party to hold their context and the second instance reflects the total turnout of the two parties' contests combined and a turnout rate is reported for the two contests.

Again, please see the FAQ for more information.

Date State

Election
Type

VAP
Estimate

VEP
Estimate
Vote in Democratic Contest
Vote in Republican Contest
Minor
Party
Candidates
Total
Ballots
Cast
VEP
Total
Ballots
Cast
Turnout
Rate
Jan. 3 Iowa Caucus
2,284,730
2,196,724
354,355
16.1%
Jan. 5 Wyoming Rep. Caucus
401,306
387,058
Jan. 8 New Hampshire Primary
1,021,849
988,708
53.6%
Jan. 15 Michigan Primary
7,627,954
7,304,120
20.0%
Jan. 19 Nevada Caucus
1,931,679
1,669,337
117,559
44,315
161,874
9.7%
  South Carolina Rep. Primary
3,380,941
3,230,163
Jan. 26 South Carolina Dem. Primary
3,380,941
3,230,163
977,650
30.3%
Jan. 29 Florida Primary
14,299,134
12,553,134
34.0%
Feb. 1-3 Maine Rep. Caucus
1,041,335
1,023,959
Feb. 5 Alabama Primary
3,523,994
3,379,070
1,088,835
32.2%
  Alaska Caucus
505,524
475,224
15,000
23,621
5.0%
  Arizona Primary
4,744,180
4,121,551
24.2%
  Arkansas Primary
2,146,616
2,029,675
26.8%
  California Primary
27,356,412
22,726,155
2,932,812
40.0%
  Colorado Caucus
3,713,368
3,412,102
185,401
5.4%
  Connecticut Primary
2,689,915
2,467,974
151,605
507,166
20.5%
  Delaware Primary
665,181
616,724
146,578
23.8%
  Georgia Primary 7,098,566
6,329,221
2,024,392
32.0%
  Idaho Dem. Caucus
1,107,344
1,026,963
  Illinois Primary
9,699,779
8,832,544
2,038,614
33.8%
  Kansas Dem. Caucus
2,090,119
1,971,844
37,089
  Massachusetts Primary 5,033,718
4,624,671
1,263,764
1,768,206
38.2%
  Minnesota Caucus
3,962,872
3,724,120
277,163
7.4%
  Missouri Primary
4,477,478
4,297,028
1,415,951
33.0%
  Montana Rep. Caucus
744,486
734,265
1,817(a)
  New Jersey Primary
6,642,923
5,850,338
1,707,400
29.2%
  New Mexico Dem. Caucus
1,484,232
1,364,055
  New York Primary 14,924,774
13,166,835
2,561,221
19.5%
  North Dakota Caucus
498,641
489,003
19,102
28,887
5.9%
  Oklahoma Primary
2,735,269
2,584,090
417,207
752,261
29.1%
  Tennessee Primary
4,727,718
4,522,727
1,178,579
26.1%
  Utah Primary
1,855,254
1,731,819
24.7%
  West Virginia Rep. Caucus
1,427,224
1,407,186
Feb. 9 Kansas Rep. Caucus
2,090,119
1,971,844
56,521
2.9%
  Louisiana Primary
3,235,413
3,083,603
384,346
545,515
17.7%
  Nebraska Dem. Caucus 1,334,116
1,268,115
38,670
  Washington Caucus
4,980,527
4,525,823
?
?
Feb. 10 Maine Dem. Caucus
1,041,335
1,023,959
50,008
4.9%
Feb. 12 District of Columbia Primary 476,698
435,511
30.1%
  Maryland Primary
4,274,714
3,887,403
878,174
31.5%
  Virginia Primary 5,924,917
5,487,966
1,475,455
26.9%
Feb. 19 Hawaii Dem. Caucus
999,231
913,611
?
  Washington Primary 4,980,527
4,525,823
30.6%
  Wisconsin Primary
4,300,601
4,105,710
37.1%
March 4 Ohio Primary
8,732,630
8,502,366
1,095,917
42.4%
  Rhode Island Primary 824,580
759,793
27,237
28.4%
  Texas Primary
17,523,049
14,942,119
2,874,986
4,237,308
28.4%
  Vermont Primary 491,902
483,489
40.7%
March 8 Wyoming Dem. Caucus
402,586
388,310
9,953
2.6%
March 11 Mississippi Primary
2,160,244
2,097,253
577,438
27.5%
April 22 Pennsylvania Primary
9,683,978
9,360,067
2,354,005
3,183,134
34.0%
May 6 Indiana Primary
4,792,223
4,623,736
1,278,355
37.3%
  North Carolina Primary
6,957,520
6,488,268
1,580,726
32.8%
May 13 Nebraska Rep. Primary 1,336,555
1,270,460
94,535(d)
152
260,150
20.5%
  West Virginia Dem. Primary
1,428,326
1,408,281
457,382
32.5%
May 20 Kentucky Primary 3,267,951
3,156,075
29.2%
  Oregon Primary
2,927,075
2,711,305
43.2%
May 27 Idaho Rep. Primary
1,114,053
1,033,390
17.7%
June 3 Montana Primary
747,985
737,733
95,730
38.7%
  New Mexico Rep. Primary
1,492,570
1,371,818
264,238
19.3%
  South Dakota Primary
605,821
593,121
28.4%

Notes: (a) This is the number of credentialed Republicans who voted in Montana's caucus. (b) This is the number of West Virginia Republican State Convention Delegates. (c) The Washington state Democratic primary was a straw vote only; delegates were selected at the Feb 9 caucus. Republicans selected delegates by a combination of primary and caucus. (d) Nebraska Democrats selected their delegates in a Feb. 9 caucus. (e) Idaho Democrats selected their delegates through a Feb. 5 caucus.