Gallup has just published one. It paints a less bleak picture for Romney than some others, but, then again, Gallup apparently never showed that same anti-Mormon sentiment.
Black
Would vote: 94
Would not: 5
Woman
Would vote: 88
Would not: 11
Mormon
Would vote: 72
Would not: 24
And some reference points (would vote figures):
Black
2003: 92
1999: 95
1997: 93
1987: 79
1978: 77
1967: 53
1958: 38
Woman
2003: 87
1999: 92
1987: 82
1978: 76
1967: 57
1958: 54
1937: 33
Mormon
1999: 79
1967: 75
Apparently Americans were more tolerant in 1999 than they are today, and, while views of blacks and women have vastly improved in the past half-century, the general public's view of Mormons has either remained steady or declined slightly, depending on how you interpret the numbers.
Link:
http://pollingreport.com/politics.htm