Sen. Joe ManchinJoseph (Joe) ManchinOvernight Health Care: Appeals court strikes down Medicaid work requirements | Pelosi's staff huddles with aides on surprise billing | Senate Dems pressure Trump to drop ObamaCare lawsuit Senate Democrats pressure Trump to drop ObamaCare lawsuit Manchin not ruling out endorsing Trump reelection MORE (D-W.Va.) admitted President Obama's remarks that "every single one" of his policies was on the ballot this fall complicated red-state Democratic senators' reelection efforts.

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"He makes it more challenging, let's put it that way," Manchin said when asked about Obama's comments on MSNBC Saturday morning.

Republicans have pounced on the president's remarks  — Sens. Pat RobertsCharles (Pat) Patrick RobertsKobach says he discussed his Senate bid with Trump Republicans expect Trump to withdraw controversial Fed nominee Celebrating and expanding upon five years of the ABLE  Act MORE (R-Kan.), Mitch McConnellAddison (Mitch) Mitchell McConnellTrump declares war on hardworking Americans with new budget request The Hill's Morning Report — AG Barr, GOP senators try to rein Trump in Overnight Health Care: Nevada union won't endorse before caucuses after 'Medicare for All' scrap | McConnell tees up votes on two abortion bills | CDC confirms 15th US coronavirus case MORE (R-Ky.) and former Sen. Scott Brown (R-Mass.) have all used them in recent attack ads.

Manchin has been working to help reelect fellow red-state senators, recently stumping with Sen. Mary LandrieuMary Loretta LandrieuA decade of making a difference: Senate Caucus on Foster Youth Congress needs to work to combat the poverty, abuse and neglect issues that children face Dems wrestle over how to vote on ‘Green New Deal’ MORE (D-La.). He praised her and fellow red-state Sens. Mark BegichMark Peter BegichAlaska political mess has legislators divided over meeting place Former GOP chairman Royce joins lobbying shop Lobbying world MORE (D-Alaska), Mark PryorMark Lunsford PryorCoronavirus poses risks for Trump in 2020 Tom Cotton's only Democratic rival quits race in Arkansas Medicaid rollback looms for GOP senators in 2020 MORE (D-Ark.) and Kay HaganKay Ruthven HaganCoronavirus poses risks for Trump in 2020 GOP braces for Democratic spending onslaught in battle for Senate Democrats will win back the Senate majority in 2020, all thanks to President Trump MORE (D-N.C.) as "four good Americans" who are "right in the moderate middle." 

He then put distance before their and his views and "what the Washington crowd believes," knocking President Obama for "moving further to the left than my state ever will." 

Manchin has long been critical of Obama — he famously shot the Cap & Trade bill with a rifle in a 2010 campaign ad — which has helped him maintain popularity in an increasingly Republican state.

However, it looks like some red-state Democrats may not be able to get enough distance from the president, as Republicans' hopes for a Senate takeover have brightened.

 This post was updated at 2:10 p.m.