Mapped is the White gender gap for the states where CNN has exit polls. The measurement I used was the percentage of White females who voted for Trump divided by the percentage of White males who voted for Trump. I created other graphs, for Clinton’s share and using the more common method of subtracting the percentage of male voters who voted Trump/Clinton from the number of female voters who voted Trump/Clinton. The pattern was basically the same regardless.
There’s a weak pattern of a lower gender gap in the South and Southwest, where racial identity among Whites is more salient. The biggest gender gaps are found in the industrial Midwest and the most cucked states like California and New York.