The Republican Party has launched a war on women, Sen. Barbara BoxerBarbara BoxerTrump riles Dems with pick for powerful EPA job Pelosi's chief of staff stepping down Time is now to address infrastructure needs MORE (D-Calif.) said Tuesday, flanked by five of her female Senate colleagues at a fundraiser for Democratic female candidates.

Republican efforts to curtail family planning and infertility treatment, and to repeal clean air regulations that protect pregnant women and others, have created a dire need for a stronger voice in the Senate representing women's needs, Boxer told donors for EMILY's List, a PAC that supports Democratic women who favor abortion rights.

"The best way to fight back in this war is to elect more women, and these women have stepped up to the plate," she said.

Boxer spoke to a few hundred supporters who packed a chic Washington art gallery Tuesday for a fundraiser for Senate candidates endorsed by the liberal group.

At her side were major forces in the Democratic party and female senators up for reelection in 2012, including Sens. Debbie StabenowDeborah (Debbie) Ann StabenowMich. Senate candidate opts for House run instead Report: GOP donors can't get in touch with Kid Rock Kid Rock denies press credentials to Detroit paper MORE (Mich.), Maria CantwellMaria Elaine CantwellSenate energy bill is misguided gift to Trump’s dirty fossil fuel agenda Help states solve their housing problems with the Affordable Housing Credit Improvement Act Time to pass the U.S. OUTDOOR Act to support American jobs and consumers MORE (Wash.), Amy KlobucharAmy Jean KlobucharWeek ahead: Crunch time for defense bill’s cyber reforms | Equifax under scrutiny Some Dems sizzle, others see their stock fall on road to 2020 Consumers the big winners of Amazon-Whole Foods merger MORE (Minn.), Claire McCaskillClaire Conner McCaskillGOP sees fresh opening with Dems’ single payer embrace Senators blast internet subsidy program It is time to make domestic terrorism a federal crime MORE (Mo.) and Kirsten GillibrandKirsten Elizabeth GillibrandOvernight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions Overnight Cybersecurity: Equifax hit by earlier hack | What to know about Kaspersky controversy | Officials review EU-US privacy pact Senate passes 0B defense bill MORE (N.Y.). Sen. Chuck SchumerCharles (Chuck) Ellis SchumerSenate Dems hold floor talk-a-thon against latest ObamaCare repeal bill This week: Senate wrapping up defense bill after amendment fight Cuomo warns Dems against cutting DACA deal with Trump MORE (N.Y.), the No. 3 Democrat in the Senate, also made an appearance.

"We're in a world of hurt right now. Karl Rove's group came in, and they're going to come in against all of these women," Boxer said, decrying the unflattering photos outside groups unearth for their attack ads. "I kept my grandchildren away from the television. 'Oh, my grandmother is so ugly.' "

Of the 12 Democratic women serving in the Senate, half are up for reelection, but when new recruits are included, 2012 will feature the most Democratic women running for the Senate in U.S. history, said EMILY's List President Stephanie Schriock. She said the PAC has set a new record for number of donors and members supporting the organization.

EMILY's List has already launched aggressive fundraising and advocacy efforts on behalf of both House and Senate candidates it has endorsed for the 2012 cycle. The group has poured major dollars into the campaign of Elizabeth WarrenElizabeth Ann WarrenSenate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Trump bets base will stick with him on immigration Dems call for action against Cassidy-Graham ObamaCare repeal MORE, and signaled its intention on Monday to start airing ads in Massachusetts to boost her Senate candidacy.

The group has also taken a prominent role in supporting Suzanne BonamiciSuzanne Marie BonamiciGore wishes Mikulski a happy birthday at 'Inconvenient Sequel' premiere Dems to Mattis: Don't delay transgender enlistment policy Washingtonians take center stage at Will on the Hill MORE, the Democratic nominee in a special House race in Oregon coming up in January. On the Senate side, the PAC is lending its support to Democratic Reps. Tammy BaldwinTammy Suzanne BaldwinSenate Dems hold floor talk-a-thon against latest ObamaCare repeal bill This week: Senate wrapping up defense bill after amendment fight Week ahead: Senate to wrap up defense bill MORE (Wis.) and Shelley Berkley (Nev.). Both are making runs for the upper chamber and joined Boxer and others Tuesday for the fundraiser.

The Susan B. Anthony List, a group that supports candidates who oppose abortion, has made clear it plans to push the opposite agenda in the upcoming elections. The group rolled out its first slate of House endorsements for the cycle on Tuesday.