Sen. Joe ManchinJoseph (Joe) ManchinToomey on gun reform: 'Beto O'Rourke is not helping' Trump walks tightrope on gun control O'Rourke gun confiscation talk alarms Democrats 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 RobertsInternal poll shows Kobach trailing Democrat in Kansas Senate race Here are the lawmakers who aren't seeking reelection in 2020 Hillicon Valley: Lawmakers ramp up Silicon Valley antitrust probe | Treasury sanctions North Korean cyber groups | Thiel to host Kobach fundraiser MORE (R-Kan.), Mitch McConnellAddison (Mitch) Mitchell McConnellToomey on gun reform: 'Beto O'Rourke is not helping' Election meddling has become the new normal of US diplomacy DC statehood push faces long odds despite record support 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 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.). 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 PryorMedicaid rollback looms for GOP senators in 2020 Cotton pitches anti-Democrat message to SC delegation Ex-Sen. Kay Hagan joins lobby firm MORE (D-Ark.) and Kay HaganKay Ruthven HaganWarning signs flash for Tillis in North Carolina Tillis trails Democratic challenger by 7 points in North Carolina poll North Carolina businessman will challenge Tillis in GOP primary 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.