Women voters delivered President Obama a second term.

As potentially the first woman president, Hillary Clinton can count on an even bigger slice of the women's vote, right? Not so fast:  

A new Wall Street Journal/NBC News poll suggests she may have a tough time pulling [an increase in the women's vote] off. Mrs. Clinton is losing ground with white women and many other important slices of the electorate, the poll shows, amid a spate of reports about her email practices, speaking fees and foreign donations to the Clinton Foundation.

In June, 44% of white women had a favorable view of Mrs. Clinton, compared to 43% who didn’t. In July, those numbers moved in the wrong direction for Mrs. Clinton: Only 34% of white women saw her in a positive light, compared to 53% who had a negative impression of her, the poll found.

President Obama didn't do so well with white women voters in 2012–they went for Mitt Romney by 14 points.  Hillary Clinton probably won't get as much of the African-American vote as President Obama so she needs to compensate  with women.

Single mothers who lack a college degree and  who are likely to look to the government for help remain an important part of the Democratic base. But white women with at least a college degree are turning away from her. In June, this group had a 51 percent favorable view of Clinton with a 38 percent negative view. In the latest WSJ/NBC poll, conducted from July 26-30, she has 43 percent positive and 47 percent negative.

This must be sobering news in Hillaryland:

“There is no way you can say she’s in the same position this month compared to last month,” said Bill McInturff, a Republican pollster who directs the WSJ/NBC News survey along with Democrat Fred Yang. “She’s been dented and she’s in a weaker position.”

Slippage among white women is not the only worrying news for the Clinton campaign.

Evenly split in their opinion of Mrs. Clinton earlier in the year, independents now have only a 27 percent favorable opinion of her. African-Americans still give overwhelming support to Clinton, but their support has declined from 81 percent positive in June to the current level of 66 percent positive.

The idea of a woman president remains compelling, but, as Lisa Schiffren predicted earlier, many women, realizing that there will be a woman president some time in the near future, know that there are better choices for the honor.

Mrs. Clinton's image won't be improved by news that the FBI is investigating her use of a private e-mail server, possibly making classified information vulnerable.