Former Obama campaign strategist Joel Benenson said on Thursday that Republicans are worried about President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's role in the upcoming midterm elections given his low approval numbers.

"He's got an election eight weeks out where I think the Republicans know they're on perilous turf right now, and I think it's because largely because he's looming over this like a dark cloud," Benenson told Hill.TV's Joe Concha on "What America's Thinking."

President Trump's average approval rating is sitting at around 40 percent, according to the Real Clear Politics Average, while his average disapproval rating sits at around 53 percent.

However, the president continues to poll well with his base.

Ninety percent of Republicans said they approved of Trump's job, according to an NBC News/Wall Street Journal poll released late last month.

"I think Donald Trump cares about himself first and foremost, and he's very satisfied to play to his base," Benenson said.

"Unfortunately that doesn't get you to a majority of Americans," he continued.

Benenson's comments come as Trump hits the campaign trail for Republican candidates ahead of November's midterms.

An NPR/Marist poll released on Wednesday showed Democrats with a 12-point lead over Republicans on the generic congressional ballot.

— Julia Manchester