Michelle ObamaMichelle ObamaVideo surfaces of Michelle Obama at Beyonce’s birthday party Budowsky: Dems need council of war The Hill's 12:30 Report MORE raised funds Monday for female Democratic Senate candidates in New York.

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"We are just six seats away from losing the Senate — just six. That’s how close these midterm elections are," the first lady said in her remarks.

She implored the crowd to back Michelle Nunn in Georgia; Natalie Tennant in West Virginia; Alison Lundergan Grimes, who's challenging Senate Minority Leader Mitch McConnellMitch McConnellSenate Dem: We’re trying to block a recess appointment to replace Sessions Trump predicts 'problems' for those voting against ObamaCare repeal Overnight Defense: House passes Russia sanctions deal | McCain returns to Senate | Watchdog opens criminal probe into M camo mistake MORE (R-Ky.); Sen. Jeanne Shaheen Jeanne ShaheenCongress must extend critical federal funding for type 1 diabetes research Overnight Defense: Trump gets briefing at Pentagon on ISIS, Afghanistan | Senate panel approves five defense picks | Senators want Syria study in defense bill Gore wishes Mikulski a happy birthday at 'Inconvenient Sequel' premiere MORE (D-N.H.), who's feeling the heat from speculation former Sen. Scott Brown (R-Mass.) will move to New Hampshire and challenge her; and Sens. Kay HaganKay HaganLinking repatriation to job creation Former Sen. Kay Hagan in ICU after being rushed to hospital GOP senator floats retiring over gridlock MORE (D-N.C.) and Mary LandrieuMary LandrieuCNN producer on new O'Keefe video: Voters are 'stupid,' Trump is 'crazy' CNN's Van Jones: O'Keefe Russia 'nothingburger' video 'a hoax' Trump posts O'Keefe videos on Instagram MORE (D-La.), who are top Republican targets. 

The Democratic Senatorial Campaign Committee sees all six races as vital to the party's hopes of retaining the Senate.

Democrats believe they can benefit next fall from support from women voters, a voting bloc that boosted President Obama and other Democratic candidates in 2012. 

Also spotted at the luncheon were Sens. Amy KlobucharAmy KlobucharDems to unveil ‘better deal’ messaging campaign Monday Dem senator: Trump acting like he's still on ‘The Apprentice’ The next battle in the fight against human trafficking MORE (D-Minn.), Tammy BaldwinTammy BaldwinSteel industry urges House panel to adopt 'Buy America' rules Major progressive group endorses Martha McSally challenger Vulnerable senators raise big money ahead of 2018 MORE (D-Wis.) Heidi HeitkampHeidi HeitkampRegulatory experts push Senate leaders for regulatory reform Why governors hold power in the battle for GOP healthcare votes Vulnerable senators raise big money ahead of 2018 MORE (D-N.D.), and Mazie HironoMazie HironoIf our innovators have no reward, how will America compete? Three Dem senators call for 'immediate review' of Kushner's security clearance Poll: Sanders is most popular senator in any home state MORE (D-Hawaii), according to a White House pool report.

Obama noted how the Democratic Senate had helped pass her husband's agenda. She touted the Affordable Care Act — but didn't mention the problems with its web site —  the Recovery Act and the Lilly Ledbetter Fair Pay Act.

The minimum cost to attend was $250 and more than 300 donors were in attendance, a DSCC spokesperson said, according to the pool report. The DSCC did not release a figure on how much money was raised.

Obama has upped her fundraising for the Democrats heading into the midterms.

"I hate doing this," she told the crowd. "I love you all, but I hate asking you guys for stuff — and I've gotten pretty good at it."