Barack Obama’s campaign is trying to convince Americans that John McCain won’t be successful in wooing women voters.

Dana Singiser, who oversees Barack Obama’s women’s outreach efforts, issued a memo Monday, arguing that the Republican presidential hopeful made a major effort to reach women voters in June because he’s so far behind his Democratic opponent in garnering the female vote.

"Despite his campaign’s outreach efforts, McCain’s attempt to bridge the gender gap has fallen flat," wrote Singiser. "He fares worse among women than any presidential candidate since Bob Dole in 1996."

Singiser, who is a former Hillary Clinton aide, noted that women have outvoted men in every election since 1964, and that during this year’s Democratic primaries, the women’s vote reached at least 59 percent in 14 states.

"During the Democratic National Convention next week we will mark Women’s Equality Day, the anniversary of women’s suffrage in the United States,” she said. “Eighty-eight years after the right of American women to vote was written into our Constitution, the women’s vote will make the difference in this election."

CBS News and CNN note that McCain spokesman Tucker Bounds did not respond directly to the Singiser memo, but said: "Barack Obama is spinning this issue to disguise his support for higher taxes, and refusing to acknowledge that the legislation he’s promoting has more to do with paychecks for trial lawyers than the struggles of working women."

Bounds said the Equal Pay Legislation, which Obama supports, would benefit trial lawyers in part because it could lead to frivolous lawsuits.

Here are five reasons, according to the Obama campaign, that McCain can’t get the women vote:

1.) Women voters don’t trust McCain because of his extreme positions on the key issues important to them. Obama leads McCain by 10 points (42% vs. 32%) when it comes to which candidate women trust more. (The August 5 poll also found that 14% said they trust neither, and 5% trust both.)

2.) Women want change from the last eight years of neglect for America’s middle-class families and women’s economic security.

3.) Equal Pay: 77% of women believe the next president should address the issue of providing women with equal pay for equal work. McCain has opposed legislation to provide more effective remedies to victims of pay discrimination, and legislation to overturn the Ledbetter decision — a pay discrimination case filed by Lilly Ledbetter against Goodyear. The case was thrown out last year by the Supreme Court in a 5-4 decision delivered by conservative Justice Samuel Alito.

4.) Health Care Costs: McCain’s health-care plan "isn’t expected to make a major dent in the number of uninsured Americans," and he would – for the first time in our nation’s history – tax health-care benefits. Only 27% of women are very confident that they will be able to afford health care for themselves and their families. There is a disproportionate number of women who are uninsured or in danger of losing their coverage.

5.) Women’s Reproductive Rights: 62% of women believe that Roe v. Wade established a constitutional right, but McCain has bragged about consistently receiving a zero rating from pro-choice group NARAL during his 25-year voting career. McCain has repeatedly voted against federal funding for family planning, and accessibility of contraceptives for women. McCain’s support among Republican pro-choice women dropped by 9% after hearing his positions.