The marital status groups favoring Democrats
Women who had never been married were far more likely to be Democrats, 72%, than Republicans, 24%. (Percentages do not always add up to 100 because they exclude the percentage of people who did not answer the question.)
Never-married women
72% Dem
24% Rep
The Pew Report did not publish findings separately for never-married women who were Black, but based on other data in the report, I think their preferences for Democrats would have been even more striking. For example, averaging over all marital status categories, Black women identify as Democrats by a margin of 84% to 10%.
Never-married men (averaged across racialized categories) are more often Democrats, too, but not by as wide a margin as the women, 61% vs. 37%.
Divorced or separated men and women are also more likely to be Democrats than Republicans, though again, not to the same degree as never-married men or women. For divorced men, 53% identify as Dem and 44% as Rep. For divorced women, the findings are almost the same: 51% Dem vs. 44% Rep.
The marital status group that most closely resembles the never-married people are the people who are cohabiting as a couple but are not married. The women identify more often as Democrats by 64% to 33% and the men by 60% to 39%.