Sen. Joe ManchinJoseph (Joe) ManchinManchin warns he'll slow-walk government funding bill until he gets deal on miners legislation Krystal Ball: Is this how Bernie Sanders will break the establishment? Potential Dem defectors face pressure on impeachment 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 RobertsLankford to be named next Senate Ethics chairman The Hill's Morning Report - Intel panel readies to hand off impeachment baton The job no GOP senator wants: 'I'd rather have a root canal' MORE (R-Kan.), Mitch McConnellAddison (Mitch) Mitchell McConnellDemocrats seek leverage for trial Democrats spend big to put Senate in play House Democrats to vote on flavored e-cigarettes ban next year 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 PryorTom Cotton's only Democratic rival quits race in Arkansas Medicaid rollback looms for GOP senators in 2020 Cotton pitches anti-Democrat message to SC delegation MORE (D-Ark.) and Kay HaganKay Ruthven HaganGOP braces for Democratic spending onslaught in battle for Senate Democrats 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 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.