A gruelling 16-month primary battle saw historic numbers of voters turn out to have their say on the presidential nominees. Here we break down the results - all figures are in percentages.

January:

3rd - Iowa - D - Barack Obama 38; John Edwards 30; Hillary Clinton 29 R - Mike Huckabee 34; Mitt Romney 25; Fred Thompson 13; John McCain 13

5th - Wyoming (R) Mitt Romney 67; Fred Thompson 25; Duncan Hunter 8

8th - New Hampshire - D - Clinton 39; Obama 37; Edwards 17 R - McCain 37; Romney 32; Huckabee 11

15th - Michigan - D - Clinton 55; uncommitted 40 R - Romney 39; McCain 30; Huckabee 16 (NB Clinton was the only leading Democrat participating as the others pulled out after the state was stripped of its delegates for holding its primary early. It was also stripped of half its Republican delegates)

19th - South Carolina (R) McCain 33; Huckabee 30; Thompson 16; Romney 15

- Nevada - D - Clinton 51; Obama 45; Edwards 4 R - Romney 51; Ron Paul 14; McCain 13; Huckabee 8

26th - South Carolina (Democratic) Obama 55; Clinton 27; Edwards 18

29th - Florida - D - Clinton 50; Obama 33; Edwards 14 R - McCain 36; Romney 31; Rudy Giuliani 15; Huckabee 14 (NB Clinton was the only Democrat to visit the state after it was stripped of its delegates for holding its primary early. It was also stripped of half its Republican delegates)

February

1st - Maine (R) Romney 52; McCain 21; Paul 19; Huckabee 6

5th - Super Tuesday

Alabama - D - Obama 56; Clinton 41; Edwards 1 R - Huckabee 41; McCain 37; Romney 18

Alaska - D - Obama 74; Clinton 25 R - Romney 44; Huckabee 22; Paul 17; McCain 16

American Samoa (D) Clinton 57; Obama 42

Arizona - D - Clinton 51; Obama 42 R - McCain 47; Romney 34; Huckabee 9

Arkansas - D - Clinton 70; Obama 27 R - Huckabee 16; McCain 20; Romney

California - D - Clinton 52; Obama 43 R - McCain 42; Romney 34; Huckabee 12

Colorado - D - Obama 67; Clinton 32 R - Romney 59; McCain 19; Huckabee 13

Connecticut - D - Obama 51; Clinton 47 R - McCain 52; Romney 33; Huckabee 7

Delaware - D - Obama 53; Clinton 42 R - McCain 45; Romney 33; Huckabee 15

Georgia - D - Obama 66; Clinton 31 R - Huckabee 34; McCain 32; Romney 30

Idaho (D) Obama 80; Clinton 17

Illinois - D - Obama 65; Clinton 33 R - McCain 47; Romney 29; Huckabee 16

Kansas (D) Obama 74; Clinton 26

Massachusetts - D - Clinton 56; Obama 41 R - Romney 51; McCain 41; Huckabee 4

Minnesota - D - Obama 66; Clinton 32 R - Romney 41; McCain 22; Huckabee 20

Missouri - D - Obama 49; Clinton 48 R - McCain 33; Huckabee 32; Romney 29

Montana (R) Romney 38; Paul 25; McCain 22; Huckabee 15

New Jersey - D - Clinton 54; Obama 44 R - McCain 55; Romney 28; Huckabee 8

New Mexico (D) Clinton 49; Obama 48

New York - D - Clinton 57; Obama 40 R - McCain 51; Romney 28; Huckabee 11

North Dakota - D - Obama 61; Clinton 37 R - Romney 36; McCain 23; Paul 21; Huckabee 20

Oklahoma - D - Clinton 55; Obama 31 R - McCain 37; Huckabee 33; Romney 25

Tennessee - D - Clinton 54; Obama 41R - Huckabee 34; McCain 32; Romney 24

Utah - D - Obama 57; Clinton 39 R - Romney 90; McCain 5; Paul 3; Huckabee 1

West Virginia (R) Huckabee 57; Romney 47; McCain 1

Democrats abroad Obama 66; Clinton 33

9th - Louisiana - D - Obama 57; Clinton 36 R - Huckabee 43; McCain 42

- Washington State D - Obama 68; Clinton 31 R - McCain 26; Huckabee 24; Paul 22 (NB The Republicans decide half of the state's pledged delegates in a caucus on this date - the rest were decided in a primary on February 19)

- Kansas (R) Huckabee 60; McCain 24

- Nebraska (D) Obama 68; Clinton 32

- Virgin Islands (D) Obama 90; Clinton 8

10th - Maine (D) Obama 59 per cent; Clinton 40 per cent

12th - District of Columbia - D - Obama 75; Clinton 24 R - McCain 68; Huckabee 17

- Maryland - D - Obama 60; Clinton 37 R - McCain 55; Huckabee 29

- Virginia - D - Obama 64; Clinton 35 R - McCain 50; Huckabee 41

19th - Wisconsin - D - Obama 58; Clinton 41 R - McCain 55; Huckabee 37

- Hawaii (D) Obama 76; Clinton 24

- Washington State (R) McCain 49; Huckabee 22 (NB decides half of state's pledged delegates - the remainder were decided on February 9)

23rd - American Samoa (R) McCain 100

Northern Mariana Islands (R) McCain 91; Huckabee 4

24th - Puerto Rico (R) McCain 90; Huckabee 5

March

4th - Ohio - D - Clinton 54; Obama 44 R - McCain 60; Huckabee 31

- Texas - PRIMARY - D - Clinton 51; Obama 47 R - McCain 51; Huckabee 38

- Texas - CAUCUS (D) - Obama 56; Clinton 44 (NB Two thirds of Texas' Democratic delegates are decided by the primary, the remaining third by the caucus. On the Republican side, only a primary is held)

- Rhode Island - D - Clinton 58; Obama 40 R - McCain 65; Huckabee 22

- Vermont - D - Obama 59; Obama 39 R - McCain 72; Huckabee 14

8th - Wyoming (D) - Obama 61; Clinton 38

- Guam (R) - Obama 50; Clinton 50

11th - Mississippi - Obama 61; Clinton 37 R - McCain 79; Huckabee 13

April

5th - Virgin Islands (R) - McCain 31; Romney 19

22nd - Pennsylvania - D - Clinton 55; Obama 45 R - McCain 73; Paul 16; Huckabee 11

May

3rd - Guam (D) Obama 50; Clinton 50

6th - North Carolina - D - Obama 56; Clinton 42 R - McCain 74; Huckabee 12; Paul 8

- Indiana - D - Clinton 51; Obama 49 R - McCain 78; Huckabee 10; Paul 8

13th - West Virginia - D - Clinton 67; Obama 26 R - McCain 76; Huckabee 10; Paul 5

- Nebraska (R) McCain 87; Paul 13

17th - Hawaii (R) - caucus selected delegates to state convention on this date, where 100 percent supported McCain

20th - Oregon - Obama 59; Clinton 41 R - McCain 85; Paul 15

- Kentucky - Clinton 65; Obama 30 R - McCain 72; Huckabee 8; Paul 7

27th - Idaho (R) McCain 70; Paul 24

June

1st - Puerto Rico (D) Clinton 68; Obama 32

3rd - Montana (D) Obama 56; Clinton 41

- South Dakota - Clinton 55; Obama 45 R - McCain 70; Paul 17; Huckabee 7

- New Mexico (R) McCain 86; Paul 14

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