Michelle ObamaMichelle LeVaughn Robinson ObamaResistance or unhinged behavior? Partisan hatred reaches Trump's family Budowsky: A Biden-Michelle Obama ticket in 2020? Bloomberg threatens to shake up 2020 primary 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 McConnellAddison (Mitch) Mitchell McConnellLawmakers skeptical of progress on spending deal as wall battle looms Impeachment battle looms over must-pass defense bill 'Saturday Night Live' presents Trump impeachment hearings with 'pizzazz' of soap opera MORE (R-Ky.); Sen. Jeanne ShaheenCynthia (Jeanne) Jeanne ShaheenOn The Money: US paid record .1B in tariffs in September | Dems ramp up oversight of 'opportunity zones' | Judge hints at letting House lawsuit over Trump tax returns proceed Overnight Energy: EPA watchdog slams agency chief after deputy fails to cooperate in probe | Justices wrestle with reach of Clean Water Act | Bipartisan Senate climate caucus grows Overnight Defense: Trump, Erdogan confirm White House meeting | Public impeachment hearings set for next week | Top defense appropriator retiring 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 Ruthven HaganDemocrats will win back the Senate majority in 2020, all thanks to President Trump The Hill's Morning Report - Presented by Better Medicare Alliance - Dems shift strategy on impeachment vote Former North Carolina Sen. Kay Hagan dies at 66 MORE (D-N.C.) and Mary LandrieuMary Loretta LandrieuCongress needs to work to combat the poverty, abuse and neglect issues that children face Dems wrestle over how to vote on ‘Green New Deal’ Lobbying world 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 Jean Klobuchar New poll shows four top-tier 2020 candidates in Iowa New poll catapults Buttigieg to frontrunner position in Iowa Election 2020: Why I'm watching Amy and Andy MORE (D-Minn.), Tammy BaldwinTammy Suzanne BaldwinIt's time for Congress to establish a national mental health crisis number The Hill's Morning Report - Presented by Better Medicare Alliance - Dems unveil impeachment measure; Vindman splits GOP The Hill's Morning Report - Presented by Better Medicare Alliance - Dems shift strategy on impeachment vote MORE (D-Wis.) Heidi HeitkampMary (Heidi) Kathryn HeitkampThe Hill's Morning Report — Biden steadies in third debate as top tier remains the same Trump wins 60 percent approval in rural areas of key states Pence to push new NAFTA deal in visit to Iowa MORE (D-N.D.), and Mazie HironoMazie Keiko HironoDemocratic senators introduce bill to block funding for border wall live stream Overnight Energy: Perry replacement faces Ukraine questions at hearing | Dem chair demands answers over land agency's relocation | Ocasio-Cortez, Sanders unveil 0B Green New Deal public housing plan Perry replacement moves closer to confirmation despite questions on Ukraine 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."