Despite the prominent role of religion this campaign season, exit pollsters have not asked religion questions of Democratic voters in most of the primary contests so far and only limited religion questions of Republican voters. Zogby International has been asking religion questions of likely voters in its pre-election tracking polls and gave Religion & Ethics NewsWeekly exclusive access to that data. It offers a picture of how religious voting groups are leaning this year. Among the highlights: Hillary Clinton has done consistently well among Catholics and especially white Catholics. Barack Obama and Clinton have divided the white Protestant vote, including white born again Protestants. Obama has consistently won black Protestants, especially in South Carolina, and Clinton has won Hispanic Catholics. Obama has done especially well among the most and the least religiously observant. John McCain and Mitt Romney were in a tight competition for white Catholic and white Protestant votes, and although Mike Huckabee has been doing well among evangelicals, he is still not the consensus candidate for born-again Protestants.
California Likely Democratic Primary Voters February 5, 2008-Super Tuesday
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Hillary Clinton | 40 | 30 | 38 | 21 | 44 | 54 | 35 |
| Barack Obama | 38 | 58 | 43 | 67 | 37 | 35 | 52 |
| Other/ Not Sure | 22 | 12 | 19 | 12 | 19 | 11 | 13 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
California Likely Republican Primary Voters February 5, 2008-Super Tuesday
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Mike Huckabee | 22 | 25 | 6 | 18 | 6 | 12 | 6 |
| John McCain | 27 | 22 | 36 | 23 | 36 | 54 | 33 |
| Mitt Romney | 37 | 40 | 45 | 34 | 41 | 19 | 39 |
| Other/ Not Sure | 14 | 13 | 13 | 25 | 17 | 15 | 22 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Georgia Likely Democratic Primary Voters February 5, 2008-Super Tuesday
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Hillary Clinton | 43 | 15 | 39 | 18 | 34 | 21 | 30 |
| Barack Obama | 24 | 65 | 37 | 70 | 43 | 68 | 50 |
| Other/ Not Sure | 33 | 20 | 24 | 12 | 23 | 11 | 20 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Missouri Likely Democratic Primary Voters February 5, 2008-Super Tuesday
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Hillary Clinton | 59 | 31 | 47 | 15 | 51 | 10 | 36 |
| Barack Obama | 29 | 51 | 40 | 81 | 36 | 79 | 48 |
| Other/ Not Sure | 12 | 18 | 13 | 4 | 13 | 11 | 16 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Missouri Likely Republican Primary Voters February 5, 2008-Super Tuesday
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Mike Huckabee | 44 | 27 | 18 | 19 | 12 | 71 | 12 |
| John McCain | 29 | 32 | 38 | -- | 41 | 29 | 43 |
| Mitt Romney | 17 | 13 | 26 | 63 | 34 | -- | 19 |
| Other/ Not Sure | 10 | 28 | 18 | 18 | 13 | -- | 26 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
New Jersey Likely Democratic Primary Voters February 5, 2008-Super Tuesday
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Hillary Clinton | 59 | 29 | 37 | 18 | 56 | 66 | 38 |
| Barack Obama | 27 | 60 | 51 | 65 | 31 | 17 | 46 |
| Other/ Not Sure | 14 | 11 | 12 | 17 | 13 | 17 | 16 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
New Jersey Likely Republican Primary Voters February 5, 2008-Super Tuesday
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Mike Huckabee | 13 | 9 | 6 | 10 | 5 | -- | 3 |
| John McCain | 37 | 29 | 44 | 22 | 60 | 81 | 54 |
| Mitt Romney | 31 | 10 | 32 | 9 | 23 | 14 | 20 |
| Other/ Not Sure | 19 | 52 | 18 | 59 | 12 | 5 | 23 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
New York Likely Republican Primary Voters February 5, 2008-Super Tuesday
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Mike Huckabee | 20 | 12 | 8 | 19 | 5 | -- | 3 |
| John McCain | 40 | 77 | 57 | 39 | 53 | 63 | 56 |
| Mitt Romney | 21 | 9 | 19 | 3 | 24 | 5 | 23 |
| Other/ Not Sure | 19 | 2 | 16 | 39 | 18 | 32 | 18 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Florida Likely Republican Primary Voters January 29, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Rudy Giuliani | 8 | 5 | 13 | -- | 18 | 32 | 20 |
| Mike Huckabee | 24 | 30 | 5 | 40 | 5 | 9 | 7 |
| John McCain | 27 | 36 | 36 | 12 | 33 | 44 | 29 |
| Mitt Romney | 29 | 5 | 33 | 45 | 34 | 14 | 30 |
| Other/ Not Sure | 12 | 24 | 13 | 3 | 10 | 1 | 14 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
South Carolina Likely Democratic Primary Voters January 26, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Hillary Clinton | 32 | 20 | 33 | 14 | 43 | 19 | 22 |
| John Edwards | 42 | 3 | 34 | 7 | 25 | 12 | 14 |
| Barack Obama | 11 | 60 | 21 | 66 | 23 | 60 | 44 |
| Other/ Not Sure | 15 | 17 | 12 | 13 | 9 | 9 | 20 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
South Carolina Likely Republican Primary Voters January 26, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Rudy Giuliani | 3 | 2 | 5 | 3 | 10 | 6 | 4 |
| Mike Huckabee | 33 | 18 | 13 | 13 | 10 | 12 | 20 |
| John McCain | 27 | 13 | 35 | 27 | 29 | 47 | 26 |
| Mitt Romney | 11 | 6 | 19 | 22 | 18 | 7 | 12 |
| Fred Thompson | 12 | 9 | 15 | -- | 13 | 18 | 11 |
| Other/ Not Sure | 14 | 52 | 13 | 35 | 20 | 10 | 27 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Nevada Likely Democratic Caucus Voters January 19, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Hillary Clinton | 53 | 31 | 47 | 25 | 54 | 50 | 38 |
| John Edwards | 14 | 4 | 10 | -- | 11 | 2 | 13 |
| Barack Obama | 29 | 53 | 34 | 71 | 27 | 37 | 39 |
| Other/ Not Sure | 4 | 12 | 9 | 4 | 8 | 11 | 10 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Michigan Likely Republican Primary Voters January 15, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Rudy Giuliani | 2 | 4 | 4 | -- | 6 | 8 | 6 |
| Mike Huckabee | 29 | 25 | 7 | 9 | 10 | 21 | 10 |
| John McCain | 21 | 18 | 33 | 16 | 28 | 25 | 29 |
| Mitt Romney | 24 | 18 | 26 | 9 | 32 | 23 | 17 |
| Fred Thompson | 6 | 3 | 8 | 3 | 4 | -- | 4 |
| Other/ Not Sure | 18 | 32 | 22 | 63 | 20 | 23 | 34 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
New Hampshire Likely Democratic Primary Voters January 8, 2008
| Hillary Clinton % | John Edwards % | Barack Obama % | |
| Catholic | 44 | 35 | 29 |
| Protestant | 32 | 35 | 37 |
| Jewish | 4 | 5 | 4 |
| Muslim | 1 | -- | -- |
| Atheist/Other | 19 | 25 | 30 |
| Total | 100 | 100 | 100 |
New Hampshire Likely Republican Primary Voters January 8, 2008
| Rudy Giuliani % | Mike Huckabee % | John McCain % | Mitt Romney % | Fred Thompson % | |
| Catholic | 42 | 19 | 40 | 43 | 34 |
| Protestant | 42 | 71 | 46 | 46 | 54 |
| Jewish | 2 | -- | 1 | 1 | -- |
| Muslim | -- | -- | -- | -- | -- |
| Atheist/Other | 14 | 10 | 13 | 10 | 12 |
| Total | 100 | 100 | 100 | 100 | 100 |
Iowa Likely Democratic Caucus Voters January 3, 2008
| Hillary Clinton % | John Edwards % | Barack Obama % | |
| Catholic | 24 | 28 | 21 |
| Protestant | 55 | 54 | 47 |
| Jewish | 1 | 1 | 1 |
| Muslim | -- | -- | -- |
| Atheist/Other | 20 | 17 | 31 |
| Total | 100 | 100 | 100 |
Iowa Likely Republican Caucus Voters January 3, 2008
| Rudy Giuliani % | Mike Huckabee % | John McCain % | Mitt Romney % | Fred Thompson % | |
| Catholic | 25 | 14 | 21 | 26 | 21 |
| Protestant | 55 | 79 | 71 | 64 | 72 |
| Jewish | -- | -- | -- | -- | 1 |
| Muslim | -- | -- | -- | -- | -- |
| Atheist/Other | 20 | 7 | 8 | 10 | 6 |
| Total | 100 | 100 | 100 | 100 | 100 |

