According to Zogby International's pre-election tracking polls of likely voters in Ohio and Texas, Hillary Clinton did well again among religious voters, especially white Catholics. She also did better than Barack Obama among white evangelicals and other white Protestants, while he did better among non-white evangelicals and Protestants. Obama did better than Clinton among non-white Catholics in Ohio, but she captured non-white Catholics in Texas as well as.Jewish voters. There was considerable movement among the votes of religious groups in the days leading up to these two primaries. Religious voters continue to remain in flux, with some of Obama's inroads among them appearing to have weakened, and they are expected to loom large in the remaining Democratic primaries.
Ohio Likely Democratic Primary Voters March 4, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Hillary Clinton | 53 | 10 | 53 | 15 | 59 | 43 | 39 |
| Barack Obama | 35 | 80 | 37 | 78 | 30 | 52 | 47 |
| Other/ Not Sure | 12 | 10 | 10 | 7 | 11 | 5 | 14 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Ohio Likely Republican Primary Voters March 4, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| John McCain | 47 | 36 | 66 | 74 | 73 | 92 | 57 |
| Mike Huckabee | 40 | 42 | 22 | 26 | 17 | 0 | 18 |
| Other/ Not Sure | 13 | 22 | 12 | 0 | 10 | 8 | 25 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Texas Likely Democratic Primary Voters March 4, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| Hillary Clinton | 55 | 26 | 49 | 20 | 54 | 56 | 39 |
| Barack Obama | 33 | 62 | 43 | 70 | 37 | 32 | 53 |
| Other/ Not Sure | 12 | 12 | 8 | 10 | 9 | 12 | 8 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Texas Likely Republican Primary Voters March 4, 2008
| White Evangelical/Born Again % | Non White Evangelical/Born Again % | White Protestant % | Non White Protestant % | White Catholic % | Non White Catholic % | Other % | |
| John McCain | 44 | 40 | 60 | 67 | 68 | 70 | 61 |
| Mike Huckabee | 45 | 34 | 23 | 17 | 17 | 18 | 18 |
| Other/ Not Sure | 11 | 26 | 17 | 16/td> | 15 | 12 | 21 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 |

