Elizabeth Warren began airing a new commercial today, her most direct televised appeal to women after frequent messages about women’s issues on the campaign trail and in radio ads.

The new ad shows Warren, the Democratic challenger to Senator Scott Brown, speaking into the camera about equal pay laws and reproductive rights. As she speaks, images of young women from various ethnic and cultural backgrounds are shown.

“Why do women have to fight the same old battles?” Warren says. “Women still don’t get equal pay for equal work. Republicans blocked that. And even pushed a law that could have denied insurance coverage for birth control.”

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Warren has been trying to raise her standing among women. Most polls show she has a lead over Brown among female voters, but potentially not enough to overcome a more significant advantage Brown has among male voters.

Warren does not mention Brown in the ad. She has attacked him directly on the campaign trail, but not in ads, the same strategy employed by Brown. The Brown campaign today, in an Internet-only video, accused Warren of desperation for attacking him, noting that she was 5 points down in a recent poll.

The Warren ad also raises the specter of a further rightward shift on the Supreme Court, should Republicans gain control of the presidency and the Senate.

“We’re still fighting to protect a woman’s right to choose nearly 40 years after Roe v. Wade. And we could be just one Supreme Court justice away from losing it,” she says.

Brown favors legalized abortion and has been trying to emphasize his independence from the national Republican Party, though he is supported by the state’s major anti-abortion organization. Warren has tried to make the case that Brown would enable a broader Republican agenda if reelected.